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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'>Thanks Matt, Satish. A few issues though.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'>Like you said, the latest cygwin has python 2.6.8 which<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'>does not have argparse. When I place the following<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'>in path <a href="http://argparse.googlecode.com/svn/trunk/argparse.py">http://argparse.googlecode.com/svn/trunk/argparse.py</a><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'>I can run the python build with 2.6.8.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'>However, the “ar” based build had worked fine and the python<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'>based build fails for these two files.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'> src/snes/impls/MULTIB~1/multiblock.c<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'> src/snes/impls/vi/rsaug/virsaug.c<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'>It looks like these two files were NOT compiled in the ar based<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'>build. The two make.log files are attached.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'>One more question. I tried to run the python based build<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'>the second time (after it was unsuccessful the first time)<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'>and then it deleted all the previous .o files it had created in <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'>ARCH/lib/libpetsc-obj. How can that be avoided?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'>Chetan<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Verdana","sans-serif"'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> petsc-dev-bounces@mcs.anl.gov [mailto:petsc-dev-bounces@mcs.anl.gov] <b>On Behalf Of </b>Matthew Knepley<br><b>Sent:</b> Thursday, June 28, 2012 1:35 PM<br><b>To:</b> For users of the development version of PETSc<br><b>Subject:</b> Re: [petsc-dev] slow "ar Scq" on cygwin<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>On Thu, Jun 28, 2012 at 2:23 PM, Chetan Jhurani <<a href="mailto:chetan.jhurani@gmail.com" target="_blank">chetan.jhurani@gmail.com</a>> wrote:<o:p></o:p></p><div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal>Hi devs,<br><br>Is there a way to avoid running the archiver (ar)<br>every time a petsc directory is compiled?<br><br>The reason I'm asking this is that when libpetsc.lib<br>becomes large enough (say 100MB+, esp. for debug build),<br>"ar Sqc" on cygwin takes very long in each directory.<br>Depending on OS caching, very long can be 10 seconds per<br>PETSc directory just to run ar.<br><br>It creates a new temp file from scratch, puts stuff from<br>libpetsc.lib and new stuff in it and then renames the<br>temp file. As you can imagine, the compilation process is<br>fast in the beginning but crawls by the end. I've seen<br>the same IO sequence on Linux (with Sqc flags to ar), but<br>since cygwin IO is slower the effect is more clearly visible.<br>Building within a ramdisk leads to 25% faster compilation<br>but it was more of a curiosity.<o:p></o:p></p></blockquote><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Build with Python. It never uses antique things like ar :)<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal> python2.7 ./config/builder2.py build<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal> Matt<o:p></o:p></p></div><div><p class=MsoNormal> <o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in'><p class=MsoNormal style='margin-bottom:12.0pt'><span style='color:#888888'><br><span class=hoenzb>Chetan</span><br><br></span><o:p></o:p></p></blockquote></div><p class=MsoNormal><br><br clear=all><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>-- <br>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener<o:p></o:p></p></div></div></body></html>