This version (2016/07/05 12:49) is a draft.Approvals: 0/1
This is an old revision of the document!
Interfacing with PAPI : Low level interface for Fortran
PROGRAM testpapi
include 'f77papi.h'
integer check, evntst
integer*8 t0, t1, c0, c1, value
check = PAPI_NULL
C
C PAPI Initialization
C
check = PAPI_VER_CURRENT
call PAPIF_library_init(check)
if (check.ne.PAPI_VER_CURRENT) then
write(6,*) 'PAPI init error'
write(6,*) '00 check:', check, PAPI_VER_CURRENT
stop
endif
C
C PAPI Event Set Creation
C
evntst = PAPI_NULL
call PAPIF_create_eventset(evntst, check)
if (check.ne.PAPI_OK) then
write(6,*) 'PAPI event set creation error'
write(6,*) '01 check:', check, PAPI_OK
stop
endif
C
C PAPI Specify a Particular Target Event to Analyze
C PAPI_TOT_CYC Total cycles executed
C PAPI_FP_OPS Floating point operations executed
C PAPI_L1_DCM Level 1 data cache misses
C PAPI_L2_DCM Level 2 data cache misses
C for other events see /opt/sw/x86_64/glibc-2.12/ivybridge-ep/papi/5.4.3/gnu-4.4.7/include/papiStdEventDefs.h
C
call PAPIF_add_event(evntst, PAPI_FP_OPS, check)
if (check.ne.PAPI_OK) then
write(6,*) 'PAPI event set adding error'
write(6,*) '02 check:', check, PAPI_OK
stop
endif
C
C PAPI Time Estimators Initialization
C
call PAPIF_get_real_usec(t0)
call PAPIF_get_real_cyc(c0)
C
C PAPI Counting Start
C
call PAPIF_start(evntst, check)
if (check.ne.PAPI_OK) then
write(6,*) 'PAPI start error !'
write(6,*) '03 check:', check, PAPI_OK
stop
endif
C
C *** Here follows the original code section to be analyzed ***
C
C
C PAPI Counting Stop
C
call PAPIF_stop(evntst, value, check)
if (check.ne.PAPI_OK) then
write(6,*) 'PAPI stop error !'
write(6,*) '04 check:', check, PAPI_OK
stop
endif
C
C PAPI Time Estimators Stop
C
call PAPIF_get_real_usec(t1)
call PAPIF_get_real_cyc(c1)
C
C PAPI Results
C
write(6,'(a17,8x,i20)') 'PAPI event count ', value
write(6,'(a25,i20)') 'PAPI time passed in usec ', t1 - t0
write(6,'(a19,6x,i20)') 'PAPI cycles passed ', c1 - c0
C
C PAPI Free Event Set
C
call PAPIF_cleanup_eventset(evntst, check)
if (check.ne.PAPI_OK) then
write(6,*) 'PAPI event set cleanup error !'
write(6,*) '05 check:', check, PAPI_OK
stop
endif
call PAPIF_destroy_eventset(evntst, check)
if (check.ne.PAPI_OK) then
write(6,*) 'PAPI event set destruction error !'
write(6,*) '06 check:', check, PAPI_OK
stop
endif
C
C PAPI Finalize
C
call PAPIF_shutdown(check)
if (check.ne.PAPI_OK) then
write(6,*) 'PAPI finalize failed !'
write(6,*) '07 check:', check, PAPI_OK
stop
endif
d
<code>
PROGRAM testpapi
include 'f77papi.h'
integer check, evntst
integer*8 t0, t1, c0, c1, value
check = PAPI_NULL
C C PAPI Initialization C
check = PAPI_VER_CURRENT
call PAPIF_library_init(check)
if (check.ne.PAPI_VER_CURRENT) then
write(6,*) 'PAPI init error'
write(6,*) '00 check:', check, PAPI_VER_CURRENT
stop
endif
C C PAPI Event Set Creation C
evntst = PAPI_NULL
call PAPIF_create_eventset(evntst, check)
if (check.ne.PAPI_OK) then
write(6,*) 'PAPI event set creation error'
write(6,*) '01 check:', check, PAPI_OK
stop
endif
C C PAPI Specify a Particular Target Event to Analyze C PAPI_TOT_CYC Total cycles executed C PAPI_FP_OPS Floating point operations executed C PAPI_L1_DCM Level 1 data cache misses C PAPI_L2_DCM Level 2 data cache misses C for other events see C /opt/sw/x86_64/glibc-2.12/ivybridge-ep/papi/5.4.3/gnu-4.4.7/include/papiStdEventDefs.h C
call PAPIF_add_event(evntst, PAPI_FP_OPS, check)
if (check.ne.PAPI_OK) then
write(6,*) 'PAPI event set adding error'
write(6,*) '02 check:', check, PAPI_OK
stop
endif
C C PAPI Time Estimators Initialization C
call PAPIF_get_real_usec(t0)
call PAPIF_get_real_cyc(c0)
C C PAPI Counting Start C
call PAPIF_start(evntst, check)
if (check.ne.PAPI_OK) then
write(6,*) 'PAPI start error !'
write(6,*) '03 check:', check, PAPI_OK
stop
endif
C C * Here follows the original code section to be analyzed * C
C C PAPI Counting Stop C
call PAPIF_stop(evntst, value, check)
if (check.ne.PAPI_OK) then
write(6,*) 'PAPI stop error !'
write(6,*) '04 check:', check, PAPI_OK
stop
endif
C C PAPI Time Estimators Stop C
call PAPIF_get_real_usec(t1)
call PAPIF_get_real_cyc(c1)
C C PAPI Results C
write(6,'(a17,8x,i20)') 'PAPI event count ', value
write(6,'(a25,i20)') 'PAPI time passed in usec ', t1 - t0
write(6,'(a19,6x,i20)') 'PAPI cycles passed ', c1 - c0
C C PAPI Free Event Set C
call PAPIF_cleanup_eventset(evntst, check)
if (check.ne.PAPI_OK) then
write(6,*) 'PAPI event set cleanup error !'
write(6,*) '05 check:', check, PAPI_OK
stop
endif
call PAPIF_destroy_eventset(evntst, check)
if (check.ne.PAPI_OK) then
write(6,*) 'PAPI event set destruction error !'
write(6,*) '06 check:', check, PAPI_OK
stop
endif
C C PAPI Finalize C
call PAPIF_shutdown(check)
if (check.ne.PAPI_OK) then
write(6,*) 'PAPI finalize failed !'
write(6,*) '07 check:', check, PAPI_OK
stop
endif
END PROGRAM