<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div class=""><br class=""></div><span class="Apple-tab-span" style="white-space:pre"> </span>I just finished watching the presentation. Thanks for the reminder, Christopher.<div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>An excellent talk that really helped address fundamental issues and considerations when it comes to creating a cloud-optimized data archive. If you can get this presentation to ESIP, it would speak to a lot of people who are grappling with setting up their repositories in the cloud.</div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>-Rob</div><div class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On May 14, 2021, at 5:55 AM, Lynnes, Christopher S. (GSFC-5860) via Esip-cloud <<a href="mailto:esip-cloud@lists.esipfed.org" class="">esip-cloud@lists.esipfed.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta charset="UTF-8" class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-family: "Andale Mono";" class="">I wonder if this talk on H5Coro would be eligible for the summer session? It does not seek to modify the data format to be cloud-optimized, but rather to produce a read library that can read the data as if they were cloud-optimized…<o:p class=""></o:p></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-family: "Andale Mono";" class=""><o:p class=""> </o:p></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-family: "Andale Mono";" class="">Or…I guess people could just attend today’s webinar.<span class="Apple-converted-space"> </span></span><span style="font-family: "Apple Color Emoji";" class="">😊</span><span style="font-family: "Andale Mono";" class=""><o:p class=""></o:p></span></div><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 9pt; font-family: Monaco;" class="">—<o:p class=""></o:p></span></div></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-size: 9pt; font-family: Monaco;" class="">Christopher Lynnes NASA/GSFC mobile: 410-231-4573<br class="">“Perfection is achieved, not when there is nothing more to add, but when there is nothing left to take away.” A. de St. Exupery</span><span style="font-family: "Andale Mono";" class=""><o:p class=""></o:p></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="font-family: "Andale Mono";" class=""><o:p class=""> </o:p></span></div><div class=""><div class=""><div style="margin: 0in 0in 0in 0.5in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">On 5/14/21, 03:04, "The HDF Group" <<a href="mailto:info@hdfgroup.org" style="color: blue; text-decoration: underline;" class="">info@hdfgroup.org</a>> wrote:<o:p class=""></o:p></div></div></div><div class=""><div style="margin: 0in 0in 0in 0.5in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div></div><div align="center" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" id="bodyTable" style="width: 1073px; 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min-width: 100%;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width: 600px; border-collapse: collapse;"><tbody class=""><tr class=""><td valign="top" style="padding: 6.75pt 0in 0in; max-width: 100%; min-width: 100%;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="width: 600px; border-collapse: collapse; margin-left: -2.25pt; margin-right: -2.25pt; word-break: break-word;"><tbody class=""><tr class=""><td width="600" valign="top" style="width: 6.25in; padding: 0in;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="width: 600px; border-collapse: collapse;"><tbody class=""><tr class=""><td valign="top" style="padding: 0in 13.5pt 6.75pt;" class=""><h1 style="margin: 0in; line-height: 60px; font-size: 30pt; font-family: Helvetica; color: rgb(34, 34, 34); font-weight: bold;" class=""><strong class=""><span style="font-family: Helvetica;" class="">Happening Friday...</span></strong><o:p class=""></o:p></h1><h3 style="margin: 0in; line-height: 33px; font-size: 16.5pt; font-family: Helvetica; color: rgb(68, 68, 68); font-weight: bold;" class=""><strong class=""><span style="font-family: Helvetica;" class="">H5Coro: The HDF5 Cloud-Optimized Read-Only Library</span></strong><o:p class=""></o:p></h3><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif; line-height: 22px;" class=""><strong class=""><span style="font-size: 12pt; line-height: 24px; font-family: Helvetica; color: rgb(117, 117, 117);" class="">May 14, 2021 11:00 a.m. CDT</span></strong><span style="font-size: 12pt; line-height: 24px; font-family: Helvetica; color: rgb(117, 117, 117);" class=""><br class=""><br class="">NASA’s migration of science data products and services to AWS has sparked a debate on the best way to access science data stored in the cloud. Given that a large portion of NASA’s science data is in the HDF5 format or one of its derivatives, a growing number of efforts are looking at ways to efficiently access H5 files residing in S3. This presentation describes one of those efforts and argues for the creation of a standardized subset of the HDF5 specification targeting cloud environments.<o:p class=""></o:p></span></div></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width: 600px; border-collapse: collapse; min-width: 100%;"><tbody class=""><tr class=""><td valign="top" style="padding: 0in 13.5pt 13.5pt;" class=""><div align="center" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="background-color: rgb(43, 170, 223); border-collapse: collapse; background-position: initial initial; background-repeat: initial initial;"><tbody class=""><tr class=""><td style="padding: 13.5pt; border-top-left-radius: 4px; border-top-right-radius: 4px; border-bottom-right-radius: 4px; border-bottom-left-radius: 4px;" class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center;" class=""><span style="font-size: 12pt; font-family: Arial, sans-serif;" class=""><a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhdfgroup.us14.list-manage.com%2Ftrack%2Fclick%3Fu%3D1e990656e9cfaeda233d0858d%26id%3De076796b55%26e%3Dfa98935ea2&data=04%7C01%7Cchristopher.s.lynnes%40nasa.gov%7Ca62ed0e1f8ea47439d8508d916a6106b%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637565726846102392%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=mKY5OuSYVXSN8BhGA%2Bh%2FAfS1yIYyeHVvHqg5s8qwWvw%3D&reserved=0" target="_blank" title="Register for H5Coro Webinar" style="color: blue; text-decoration: underline;" class=""><b class=""><span style="color: white; text-decoration: none;" class="">Register for H5Coro Webinar</span></b></a></span><span style="font-size: 12pt; font-family: Arial, sans-serif;" class=""><o:p class=""></o:p></span></div></td></tr></tbody></table></div></td></tr></tbody></table><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width: 600px; border-collapse: collapse; min-width: 100%;"><tbody class=""><tr class=""><td valign="top" style="padding: 6.75pt 0in 0in;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="width: 600px; border-collapse: collapse; margin-left: -2.25pt; margin-right: -2.25pt;"><tbody class=""><tr class=""><td width="600" valign="top" style="width: 6.25in; padding: 0in; max-width: 100%; min-width: 100%;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="width: 600px; border-collapse: collapse; word-break: break-word;"><tbody class=""><tr class=""><td valign="top" style="padding: 0in 13.5pt 6.75pt;" class=""><h1 style="margin: 0in; line-height: 60px; font-size: 30pt; font-family: Helvetica; color: rgb(34, 34, 34); font-weight: bold;" class=""><strong class=""><span style="font-family: Helvetica;" class="">Don't forget to join us for Call the Doctor!</span></strong><o:p class=""></o:p></h1><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif; line-height: 22px;" class=""><img width="350" height="220" src="https://mcusercontent.com/1e990656e9cfaeda233d0858d/images/bcafe3a6-3960-43ac-bdee-eebb4cfd8da1.png" align="right" alt="Screenshot from Call the Doctor video recording" v:shapes="_x0000_s1026" style="width: 3.6458in; height: 2.2916in;" class=""><span style="font-size: 12pt; line-height: 24px; font-family: Helvetica; color: rgb(117, 117, 117);" class="">Our Call the Doctor sessions continue!<br class=""><br class="">Join The HDF Group and other community members for a free weekly office (half) hour to help with all of your HDF issues. These sessions take place on<span class="Apple-converted-space"> </span><strong class=""><span style="font-family: Helvetica;" class="">Tuesdays at 1:00 p.m. CDT.</span></strong><span class="Apple-converted-space"> </span><a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhdfgroup.us14.list-manage.com%2Ftrack%2Fclick%3Fu%3D1e990656e9cfaeda233d0858d%26id%3D255715caa7%26e%3Dfa98935ea2&data=04%7C01%7Cchristopher.s.lynnes%40nasa.gov%7Ca62ed0e1f8ea47439d8508d916a6106b%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637565726846102392%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=lDDreTq9p1sup9YXlE0HeJtX0ZCvN%2FzOL%2F6QlluR8N8%3D&reserved=0" target="_blank" style="color: blue; text-decoration: underline;" class=""><span style="color: rgb(23, 95, 161);" class="">Registration</span></a>is required to attend, but you only need to register once to get the invite to all future sessions. <br class=""><br class="">Past discussions have covered HDF5 command line tools and how to use them, discussions and potential bug reports on the forum, and The HDF Group's progress on improving the readability and accessibility of the HDF5 reference manual. You can catch up on these previous sessions with this<span class="Apple-converted-space"> </span><a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhdfgroup.us14.list-manage.com%2Ftrack%2Fclick%3Fu%3D1e990656e9cfaeda233d0858d%26id%3D43b898fb5f%26e%3Dfa98935ea2&data=04%7C01%7Cchristopher.s.lynnes%40nasa.gov%7Ca62ed0e1f8ea47439d8508d916a6106b%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637565726846107369%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=NQnaMwhUiG14FHwdF4I0Db4CGxBhRbQnIUq6zxi5NOo%3D&reserved=0" target="_blank" style="color: blue; text-decoration: underline;" class=""><span style="color: rgb(23, 95, 161);" class="">youtube playlist</span></a> or the<span class="Apple-converted-space"> </span><a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhdfgroup.us14.list-manage.com%2Ftrack%2Fclick%3Fu%3D1e990656e9cfaeda233d0858d%26id%3D01c812f69a%26e%3Dfa98935ea2&data=04%7C01%7Cchristopher.s.lynnes%40nasa.gov%7Ca62ed0e1f8ea47439d8508d916a6106b%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637565726846112347%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=jx6Vm6o43tdOXEqvojW6o0qL2P%2BeDdx%2B%2F61h8eU4kvk%3D&reserved=0" target="_blank" style="color: blue; text-decoration: underline;" class=""><span style="color: rgb(23, 95, 161);" class="">session notes</span></a>. <br class=""><br class="">Submit your questions ahead of time in this<span class="Apple-converted-space"> </span><a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhdfgroup.us14.list-manage.com%2Ftrack%2Fclick%3Fu%3D1e990656e9cfaeda233d0858d%26id%3D87ccff5c58%26e%3Dfa98935ea2&data=04%7C01%7Cchristopher.s.lynnes%40nasa.gov%7Ca62ed0e1f8ea47439d8508d916a6106b%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637565726846117325%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=5yoNyj4a%2F0xpVpZmo1PklY5Kosuq7MbtsAhf%2BwbK90g%3D&reserved=0" style="color: blue; text-decoration: underline;" class=""><span style="color: rgb(23, 95, 161);" class="">google doc</span></a> or just ask during the meeting. We would love to have you join us in this fun, informal, and interactive session.<o:p class=""></o:p></span></div></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width: 600px; border-collapse: collapse; min-width: 100%;"><tbody class=""><tr class=""><td valign="top" style="padding: 0in 13.5pt 13.5pt;" class=""><div align="center" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="background-color: rgb(43, 170, 223); border-collapse: collapse; background-position: initial initial; background-repeat: initial initial;"><tbody class=""><tr class=""><td style="padding: 13.5pt; border-top-left-radius: 4px; border-top-right-radius: 4px; border-bottom-right-radius: 4px; border-bottom-left-radius: 4px;" class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center;" class=""><span style="font-size: 12pt; font-family: Arial, sans-serif;" class=""><a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhdfgroup.us14.list-manage.com%2Ftrack%2Fclick%3Fu%3D1e990656e9cfaeda233d0858d%26id%3Dc6db305779%26e%3Dfa98935ea2&data=04%7C01%7Cchristopher.s.lynnes%40nasa.gov%7Ca62ed0e1f8ea47439d8508d916a6106b%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637565726846122303%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=U4KdkUU3aX%2FW71SY%2B2l22TIHOgKld1HE6YNy068RuwY%3D&reserved=0" target="_blank" title="Register for Call the Doctor sessions" style="color: blue; text-decoration: underline;" class=""><b class=""><span style="color: white; text-decoration: none;" class="">Register for Call the Doctor sessions</span></b></a></span><span style="font-size: 12pt; font-family: Arial, sans-serif;" class=""><o:p class=""></o:p></span></div></td></tr></tbody></table></div></td></tr></tbody></table><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width: 600px; border-collapse: collapse; min-width: 100%;"><tbody class=""><tr class=""><td valign="top" style="padding: 6.75pt 0in 0in;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="width: 600px; border-collapse: collapse; margin-left: -2.25pt; margin-right: -2.25pt;"><tbody class=""><tr class=""><td width="600" valign="top" style="width: 6.25in; padding: 0in; max-width: 100%; min-width: 100%;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="width: 600px; border-collapse: collapse; word-break: break-word;"><tbody class=""><tr class=""><td valign="top" style="padding: 0in 13.5pt 6.75pt;" class=""><div class="MsoNormal" align="center" style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; line-height: 22px;"><span style="font-size: 12pt; line-height: 24px; font-family: Helvetica; color: rgb(117, 117, 117);" class=""><hr size="0" width="100%" align="center" class=""></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif; line-height: 22px;" class=""><strong class=""><span style="font-size: 12pt; line-height: 24px; font-family: Helvetica; color: rgb(117, 117, 117);" class="">HDF5 User Group</span></strong><span style="font-size: 12pt; line-height: 24px; font-family: Helvetica; color: rgb(117, 117, 117);" class=""><br class="">October 12-15 2021 <br class=""><br class="">Plans are underway for the 2021 iteration of the HDF5 User Group. We are currently soliciting submissions in two categories “Paper and Presentation” or “Presentation”. Check out the <a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhdfgroup.us14.list-manage.com%2Ftrack%2Fclick%3Fu%3D1e990656e9cfaeda233d0858d%26id%3D6c6f3236ce%26e%3Dfa98935ea2&data=04%7C01%7Cchristopher.s.lynnes%40nasa.gov%7Ca62ed0e1f8ea47439d8508d916a6106b%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637565726846122303%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=yNqdUj0ytWVBwV2sJ7BdHD1IkdA6lhGmZGI0HHdYkb4%3D&reserved=0" style="color: blue; text-decoration: underline;" class=""><span style="color: rgb(23, 95, 161);" class="">2021 Call for Papers</span></a> and when you're ready <a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhdfgroup.us14.list-manage.com%2Ftrack%2Fclick%3Fu%3D1e990656e9cfaeda233d0858d%26id%3Ddb348d6bce%26e%3Dfa98935ea2&data=04%7C01%7Cchristopher.s.lynnes%40nasa.gov%7Ca62ed0e1f8ea47439d8508d916a6106b%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637565726846127281%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=7d7fPPdyU0Gyp9OWERJF046A2JOfZd7fUecJc7CQfxE%3D&reserved=0" style="color: blue; text-decoration: underline;" class=""><span style="color: rgb(23, 95, 161);" class="">submit a paper and presentation or presentation</span></a>. Abstracts for papers and presentations are due June 1, and abstracts for presentations are due August 1.<o:p class=""></o:p></span></div></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width: 600px; border-collapse: collapse; min-width: 100%;"><tbody class=""><tr class=""><td style="padding: 13.5pt; min-width: 100%;" class=""><table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" width="100%" style="width: 564px; border-collapse: collapse; border: none; min-width: 100%;"><tbody class=""><tr class=""><td style="border-style: solid none none; border-top-width: 1.5pt; border-top-color: rgb(234, 234, 234); padding: 0in; min-width: 100%;" class=""></td></tr></tbody></table></td></tr></tbody></table><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width: 600px; border-collapse: collapse; min-width: 100%;"><tbody class=""><tr class=""><td valign="top" style="padding: 6.75pt 0in 0in;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="width: 600px; border-collapse: collapse; margin-left: -2.25pt; margin-right: -2.25pt;"><tbody class=""><tr class=""><td width="600" valign="top" style="width: 6.25in; padding: 0in; max-width: 100%; min-width: 100%;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="width: 600px; border-collapse: collapse; word-break: break-word;"><tbody class=""><tr class=""><td valign="top" style="padding: 0in 13.5pt 6.75pt;" class=""><h1 style="margin: 0in; line-height: 60px; font-size: 30pt; font-family: Helvetica; color: rgb(34, 34, 34); font-weight: bold;" class="">Check out recordings of past events<o:p class=""></o:p></h1><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif; line-height: 22px;" class=""><strong class=""><span style="font-size: 12pt; line-height: 24px; font-family: Helvetica; color: rgb(117, 117, 117);" class="">HDF5 Application Tuning: There is more than one way to skin a cat(fish), Part 2</span></strong><span style="font-size: 12pt; line-height: 24px; font-family: Helvetica; color: rgb(117, 117, 117);" class=""><br class=""><br class="">On Friday, April 30, The HDF Group's Gerd Heber presented HDF5 Application Tuning: There is more than one way to skin a cat(fish), Part 2. Before returning to application tuning (in part 3), in this second part of the series, we take a closer look at HDF5 performance variability. We highlight the main variability sources, their impact on performance, and considerations for HDF5 container design.<o:p class=""></o:p></span></div></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width: 600px; border-collapse: collapse;"><tbody class=""><tr class=""><td valign="top" style="padding: 6.75pt 13.5pt;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="width: 564px; background-color: rgb(64, 64, 64); border-collapse: collapse; background-position: initial initial; background-repeat: initial initial;"><tbody class=""><tr class=""><td valign="top" style="padding: 0in;" class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="" class=""><a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhdfgroup.us14.list-manage.com%2Ftrack%2Fclick%3Fu%3D1e990656e9cfaeda233d0858d%26id%3D0f0cac7e9e%26e%3Dfa98935ea2&data=04%7C01%7Cchristopher.s.lynnes%40nasa.gov%7Ca62ed0e1f8ea47439d8508d916a6106b%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637565726846132259%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=06Y%2FMM%2FC7ylSUxijfMfaFiRbyYE7H8g1YgVola%2FJALk%3D&reserved=0" title=""" t " style="color: blue; text-decoration: underline;" class=""><span style="text-decoration: none;" class=""><span style="color: blue;" class=""><img border="0" width="564" id="_x0000_i1032" src="https://mcusercontent.com/1e990656e9cfaeda233d0858d/video_thumbnails_new/501f1cd3c479cc54cf98b953aa8b8db1.png" style="width: 5.875in;" class=""></span></span></a></span><o:p class=""></o:p></div></td></tr><tr class=""><td width="546" valign="top" style="width: 409.5pt; padding: 6.75pt 13.5pt; word-break: break-word;" class=""></td></tr></tbody></table></td></tr></tbody></table><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width: 600px; border-collapse: collapse; min-width: 100%;"><tbody class=""><tr class=""><td valign="top" style="padding: 6.75pt 0in 0in;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="width: 600px; border-collapse: collapse; margin-left: -2.25pt; margin-right: -2.25pt;"><tbody class=""><tr class=""><td width="600" valign="top" style="width: 6.25in; padding: 0in; max-width: 100%; min-width: 100%;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="width: 600px; border-collapse: collapse; word-break: break-word;"><tbody class=""><tr class=""><td valign="top" style="padding: 0in 13.5pt 6.75pt;" class=""><div class="MsoNormal" align="center" style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif; text-align: center; line-height: 22px;"><span style="font-size: 12pt; line-height: 24px; font-family: Helvetica; color: rgb(117, 117, 117);" class=""><hr size="0" width="100%" align="center" class=""></span></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif; line-height: 22px;" class=""><strong class=""><span style="font-size: 12pt; line-height: 24px; font-family: Helvetica; color: rgb(117, 117, 117);" class="">Hermes - A Distributed Buffering System for Heterogeneous Storage Hierarchies</span></strong><span style="font-size: 12pt; line-height: 24px; font-family: Helvetica; color: rgb(117, 117, 117);" class=""><br class=""><br class="">On Friday March 26th, we hosted a webinar on the Hermes project. In this webinar, the Hermes team provided an update on an NSF-funded joint effort between the Illinois Institute of Technology (IIT) and The HDF Group. They explained Hermes’ goals and what differentiates it from existing technologies. The team presented Hermes’ current status including the abstractions involved, high-level API, as well as its system architecture. Different team members then presented the results they obtained under this project. Finally, they ran through a demonstration and provided more info for those who would like to get involved with this project. <br class=""><br class="">You can find complete information and relevant links in the <a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhdfgroup.us14.list-manage.com%2Ftrack%2Fclick%3Fu%3D1e990656e9cfaeda233d0858d%26id%3D2d97600838%26e%3Dfa98935ea2&data=04%7C01%7Cchristopher.s.lynnes%40nasa.gov%7Ca62ed0e1f8ea47439d8508d916a6106b%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637565726846137236%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=yCdgKSggkGZ2jOoboi%2F4GDHtDGZJ1VsZA%2ByFQpWJijQ%3D&reserved=0" target="_blank" style="color: blue; text-decoration: underline;" class=""><span style="color: rgb(23, 95, 161);" class="">slide deck</span></a>, or watch the webinar recording below.<span class="Apple-converted-space"> </span><o:p class=""></o:p></span></div></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width: 600px; border-collapse: collapse;"><tbody class=""><tr class=""><td valign="top" style="padding: 6.75pt 13.5pt;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="width: 564px; background-color: rgb(64, 64, 64); border-collapse: collapse; background-position: initial initial; background-repeat: initial initial;"><tbody class=""><tr class=""><td valign="top" style="padding: 0in;" class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span style="" class=""><a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhdfgroup.us14.list-manage.com%2Ftrack%2Fclick%3Fu%3D1e990656e9cfaeda233d0858d%26id%3D3bca98a57a%26e%3Dfa98935ea2&data=04%7C01%7Cchristopher.s.lynnes%40nasa.gov%7Ca62ed0e1f8ea47439d8508d916a6106b%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C637565726846142215%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=LN4Y4NEEaDOc7dZtbYHz5%2FRfIX3EpYZpaz%2BDfVPLYig%3D&reserved=0" title=""" t " style="color: blue; text-decoration: underline;" class=""><span style="text-decoration: none;" class=""><span style="color: blue;" class=""><img border="0" width="564" id="_x0000_i1030" src="https://mcusercontent.com/1e990656e9cfaeda233d0858d/video_thumbnails_new/2096f9eac438c23abef3c5db57bb11ba.png" style="width: 5.875in;" class=""></span></span></a></span><o:p class=""></o:p></div></td></tr><tr class=""><td width="546" valign="top" style="width: 409.5pt; padding: 6.75pt 13.5pt; word-break: break-word;" class=""></td></tr></tbody></table></td></tr></tbody></table><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width: 600px; border-collapse: collapse; min-width: 100%;"><tbody class=""><tr class=""><td style="padding: 13.5pt; min-width: 100%;" class=""><table class="MsoNormalTable" border="1" cellspacing="0" cellpadding="0" width="100%" style="width: 564px; border-collapse: collapse; border: none; min-width: 100%;"><tbody class=""><tr class=""><td style="border-style: solid none none; border-top-width: 1.5pt; border-top-color: rgb(234, 234, 234); padding: 0in; min-width: 100%;" class=""></td></tr></tbody></table></td></tr></tbody></table><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width: 600px; border-collapse: collapse; min-width: 100%;"><tbody class=""><tr class=""><td valign="top" style="padding: 6.75pt 0in 0in;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="width: 600px; border-collapse: collapse; margin-left: -2.25pt; margin-right: -2.25pt;"><tbody class=""><tr class=""><td width="600" valign="top" style="width: 6.25in; padding: 0in; max-width: 100%; min-width: 100%;" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" align="left" width="100%" style="width: 600px; border-collapse: collapse; word-break: break-word;"><tbody class=""><tr class=""><td valign="top" style="padding: 0in 13.5pt 6.75pt;" class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif; line-height: 22px;" class=""><span style="font-size: 12pt; line-height: 24px; font-family: Helvetica; color: rgb(117, 117, 117);" class="">Don't forget, all past Call the Doctor sessions are also available on youtube. <o:p class=""></o:p></span></div></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="100%" style="width: 600px; border-collapse: collapse; min-width: 100%;"><tbody class=""><tr class=""><td valign="top" style="padding: 0in 13.5pt 13.5pt;" class=""><div align="center" class=""><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="background-color: rgb(43, 170, 223); 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font-family: Menlo-Regular; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">_______________________________________________</span><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; 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font-family: Menlo-Regular; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">Esip-cloud@lists.esipfed.org</a><br style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Menlo-Regular; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">To unsubscribe and manage prefs:<span class="Apple-converted-space"> </span></span><a href="https://lists.esipfed.org/mailman/listinfo/esip-cloud" style="color: blue; text-decoration: underline; font-family: Menlo-Regular; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">https://lists.esipfed.org/mailman/listinfo/esip-cloud</a></div></blockquote></div><br class=""></div></body></html>