Fellow CMake users:
I'm having a problem with one of my projects when I run 'ctest -j<N>'. The
problem is that after 70-90 tests, ctest decides to submit all of the
remaining tests at once (~200 tests worth). For example (actual test names
replaced to protect the innocent :-)
% ctest -j16
Test project /var/tmp/foo
Start 192: testA_2
Start 191: testB_4
Start 190: testC_3
Start 189: testD_2
Start 188: testE_4
1/279 Test #189: testD_2 ................................. Passed
1.81 sec
Start 187: testF_3
2/279 Test #192: testA_2 ................................. Passed
2.98 sec
3/279 Test #191: testB_4 ................................. Passed
2.81 sec
Start 186: testG_2
Start 185: testH_4
4/279 Test #188: testE_4 ................................. Passed
2.81 sec
5/279 Test #190: testC_3 ................................. Passed
2.92 sec
Start 184: testI_3
Start 183: testJ_2
6/279 Test #187: testF_3 ................................. Passed
2.02 sec
Start 182: testK_4
7/279 Test #186: testG_2 ................................. Passed
2.44 sec
...
82/279 Test #249: testZA_2 ................................ Passed
8.46 sec
83/279 Test #245: testZB_2 ................................ Passed
3.12 sec
Start 278: testZC_4
84/279 Test #278: testZC_4 ................................ Passed
4.27 sec
Start 266: testZD_4
Start 263: testZE_4
Start 275: testZF_4
Start 270: testZG_4
Start 269: testZH_4
# ... about 190 tests started all at the same time.
Start 89: testZZA_1
Start 88: testZZB_1
^C
These tests are running under mpirun (trailing number indicates number of
cores needed for the test) and so the total load on my machine jumps to
about 400!
My tests are registered using commands similar to this:
add_test(
NAME testA_4
COMMAND ${MPIEXEC} ${MPIEXEC_NUMPROC_FLAG} 4
${MPIEXEC_POSTFLAGS}
$<TARGET_FILE:Ut_testA_4_exe>
)
set_tests_properties( testA_4
PROPERTIES PROCESSORS "4" )
Has anyone seen this 'many threads spawning' behavior for ctest (I couldn't
find anything in the bug tracker). Is there a known resolution?
Thank you,
-kt
-----
Kelly (KT) Thompson
[email protected]
505.665.8090
Los Alamos National Laboratory
CCS-2, MS D409, TA-3/B-422/R-101
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