Papi Avail shows all available events and they look fine (including PAPI_TOT_CYC)
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PAPI Version : 4.1.3.0
Vendor string and code : GenuineIntel (1)
Model string and code : Intel(R) Xeon(R) CPU X7560 @ 2.27GHz (46)
CPU Revision : 6.000000
CPUID Info : Family: 6 Model: 46 Stepping: 6
CPU Megahertz : 2264.013916
CPU Clock Megahertz : 2264
Hdw Threads per core : 2
Cores per Socket : 8
NUMA Nodes : 4
CPU's per Node : 16
Total CPU's : 64
Number Hardware Counters : 7
Max Multiplex Counters : 512
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However, if I execute the ctests/zero test program it fails because it cannot start the counters for PAPI_TOT_CYC and PAPI_FP_INS and the output is the following:
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$ ./zero
PAPI_FP_INS is not available.
PAPI_TOT_CYC is not available.
zero.c FAILED
Line # 64
Error in PAPI_start: PAPI_EINVAL
Test case 0: start, stop.
-----------------------------------------------
Default domain is: 1 (PAPI_DOM_USER)
Default granularity is: 1 (PAPI_GRN_THR)
Using 20000000 iterations of c += a*b
-------------------------------------------------------------------------
Test type : 1
PAPI_FP_INS : 140486078337560
Real usec : 188213
Real cycles : 426153441
Virt usec : 188090
Virt cycles : 425838024
-------------------------------------------------------------------------
Verification: none
There is something wrong, but I canot say where. The following other approaches I tried:
- Different kernel: In addition to the above mentioned kernel I tried the 2.6.38-8 kernel
- DIfferent Papi verion: I tried all 4.* Papi versions the error messages are a little bit different, but the problem remains. The message for 4.1.2.1 is: "PAPI Error: sys_perf_event_open returned error on event #0. Unix says, Operation not permitted."
The only hint that something is wrong is the dmesg output:
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$ dmesg | grep Per
[ 0.358822] Performance Events: PEBS fmt1+, Nehalem events, Broken BIOS detected, using software events only.
Does anyone has an idea how I can enable Papi?
Thanks a lot
Martin