Description of problem: # ./ctests/tenth Test case 10: start, stop for derived event PAPI_L1_DCA. -------------------------------------------------------- Default domain is: 1 (PAPI_DOM_USER) Default granularity is: 1 (PAPI_GRN_THR) Using 100 iterations of c += a*b Repeated 10 times ------------------------------------------------------------------------- Test type : min max sum PAPI_L1_DCA: 65535 207667972 2076595932 PAPI_L1_DCW: 65535 8651223 86511103 PAPI_L1_DCR: 65535 8650582 86503926 ------------------------------------------------------------------------- Verification: Sum 1 approximately equals sum 2 + sum 3 or 173015029 percent error: 91.668332 tenth.c FAILED Line # 220 Error: PAPI_L1_DCA Version-Release number of selected component (if applicable): papi-5.4.3-2.fc24.ppc64le How reproducible: 100% on POWER8 Steps to Reproduce: 1. run ctests/tenth testcase 2. 3. Actual results: as above... Expected results: -------------------------------------------------------- Default domain is: 1 (PAPI_DOM_USER) Default granularity is: 1 (PAPI_GRN_THR) Using 100 iterations of c += a*b Repeated 10 times ------------------------------------------------------------------------- Test type : min max sum PAPI_L1_DCA: 65535 17316351 173122133 PAPI_L1_DCW: 65535 8650804 86504471 PAPI_L1_DCR: 65535 8659023 86567374 ------------------------------------------------------------------------- Verification: Sum 1 approximately equals sum 2 + sum 3 or 173071845 percent error: 0.029048 tenth.c PASSED Additional info: POWER7 looks OK. The equation DCA = DCW + DCR should roughly apply to the results.
It is strange that RHEL-7.3 seems to have the same settings, but the same test passes there even on POWER8. So, with RHEL-7.3, both POWER7 and POWER8 pass. With Fedora, POWER7 passes, POWER8 fails.
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