<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:rtc="http://microsoft.com/officenet/conferencing" xmlns:D="DAV:" xmlns:Repl="http://schemas.microsoft.com/repl/" xmlns:mt="http://schemas.microsoft.com/sharepoint/soap/meetings/" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ppda="http://www.passport.com/NameSpace.xsd" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:Z="urn:schemas-microsoft-com:" xmlns:st="" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><style><!--
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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:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>David,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>The project is not publicly available (sorry – nothing I can do about that). This is also the reason I made fictitious test names. I’m trying to reproduce the issue by creating a standalone project that I can redistribute. Once that is done, I will post it. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>% ctest --version<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>ctest version 2.8.4<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>-kt<i><o:p></o:p></i></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><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"'> David Cole [mailto:david.cole@kitware.com] <br><b>Sent:</b> Thursday, April 21, 2011 6:34 AM<br><b>To:</b> kgt@lanl.gov<br><b>Cc:</b> cmake@cmake.org<br><b>Subject:</b> Re: [CMake] parallel ctest spawning too many threads<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-bottom:12.0pt'>This is the first I've ever heard of it...<br><br>Cool bug!<br> (that was just a wee bit of sarcasm accompanied by a wry smile...)<br><br>What version of ctest?<br><br>Is this a project that is publicly available, so that I can try to reproduce it here and help these "innocent" coders...?<br><br><br>Thanks,<br>David<br><br><o:p></o:p></p><div><p class=MsoNormal>On Wed, Apr 20, 2011 at 6:35 PM, Kelly Thompson <<a href="mailto:kgt@lanl.gov">kgt@lanl.gov</a>> wrote:<o:p></o:p></p></div><p class=MsoNormal>Fellow CMake users:<br><br>I'm having a problem with one of my projects when I run 'ctest -j<N>'. The<br>problem is that after 70-90 tests, ctest decides to submit all of the<br>remaining tests at once (~200 tests worth). For example (actual test names<br>replaced to protect the innocent :-)<br><br>% ctest -j16<br>Test project /var/tmp/foo<br> Start 192: testA_2<br> Start 191: testB_4<br> Start 190: testC_3<br> Start 189: testD_2<br> Start 188: testE_4<br> 1/279 Test #189: testD_2 ................................. Passed<br>1.81 sec<br> Start 187: testF_3<br> 2/279 Test #192: testA_2 ................................. Passed<br>2.98 sec<br> 3/279 Test #191: testB_4 ................................. Passed<br>2.81 sec<br> Start 186: testG_2<br> Start 185: testH_4<br> 4/279 Test #188: testE_4 ................................. Passed<br>2.81 sec<br> 5/279 Test #190: testC_3 ................................. Passed<br>2.92 sec<br> Start 184: testI_3<br> Start 183: testJ_2<br> 6/279 Test #187: testF_3 ................................. Passed<br>2.02 sec<br> Start 182: testK_4<br> 7/279 Test #186: testG_2 ................................. Passed<br>2.44 sec<br><br>...<br><br> 82/279 Test #249: testZA_2 ................................ Passed<br>8.46 sec<br> 83/279 Test #245: testZB_2 ................................ Passed<br>3.12 sec<br> Start 278: testZC_4<br> 84/279 Test #278: testZC_4 ................................ Passed<br>4.27 sec<br> Start 266: testZD_4<br> Start 263: testZE_4<br> Start 275: testZF_4<br> Start 270: testZG_4<br> Start 269: testZH_4<br><br># ... about 190 tests started all at the same time.<br><br> Start 89: testZZA_1<br> Start 88: testZZB_1<br>^C<br><br>These tests are running under mpirun (trailing number indicates number of<br>cores needed for the test) and so the total load on my machine jumps to<br>about 400!<br><br>My tests are registered using commands similar to this:<br><br> add_test(<br> NAME testA_4<br> COMMAND ${MPIEXEC} ${MPIEXEC_NUMPROC_FLAG} 4<br> ${MPIEXEC_POSTFLAGS}<br> $<TARGET_FILE:Ut_testA_4_exe><br> )<br> set_tests_properties( testA_4<br> PROPERTIES PROCESSORS "4" )<br><br>Has anyone seen this 'many threads spawning' behavior for ctest (I couldn't<br>find anything in the bug tracker). Is there a known resolution?<br><br><o:p></o:p></p></div></div></body></html>