<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">The size you want to use 268435456, multiplied by 8 (size of double) gives 2147483648, 1 more than the largest 32bit int.<div class="">Not sure if this is a limitation in how PETSc creates the HDF5 metadata or not, I did not write that code<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Oct 11, 2019, at 11:35 PM, Sajid Ali via petsc-users <<a href="mailto:petsc-users@mcs.anl.gov" class="">petsc-users@mcs.anl.gov</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; 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="">268435456</span></div></blockquote></div><br class=""></div></body></html>