From: Kirby Collins (kcollins@rsn.hp.com)
Date: Tue Feb 26 2002 - 10:36:30 CST
Stream results for an 8 processor HP rp7410:
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Double precision appears to have 16 digits of accuracy
Assuming 8 bytes per DOUBLE PRECISION word
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Array size = 53477820
Offset = 0
The total memory requirement is 1224 MB
You are running each test 10 times
-- The *best* time for each test is used *EXCLUDING* the first and last iterations ---------------------------------------------------- Your clock granularity/precision appears to be 2 microseconds ---------------------------------------------------- Function Rate (MB/s) Avg time Min time Max time Copy: 3118.3649 0.2746 0.2744 0.2749 Scale: 3044.5456 0.2813 0.2810 0.2815 Add: 3278.2250 0.3917 0.3915 0.3919 Triad: 3275.3887 0.3921 0.3919 0.3925 ---------------------------------------------------- Solution Validates! ----------------------------------------------------system configuration: --------------------- two cells, 8 750MHz PA-8700 cpus fully populated with 32 512MB DIMMs (16GB total).
HP-UX 11i TCOE B.11.11.0203 Fortran90 B.11.01.48
modifications to stream source file: ------------------------------------
diff ORIG/stream_d.f stream_d.f 63c63 < PARAMETER (n=2000000,offset=0,ndim=n+offset,ntimes=10) --- > PARAMETER (n=53477820,offset=0,ndim=n+offset,ntimes=10) 88c88 < * COMMON a,b,c --- > COMMON a,b,c
compiled for parallel execution as follows: -------------------------------------------
cc +O3 +DA2.0W +DS2.0 +Odataprefetch -Wl,+pd,L -c second_wall.c f90 -o stream_d.mp +Onoopenmp +extend_source +autodbl4 +O3 +DA2.0W +DS2.0 +noppu -Wl,+pd,L -Wl,-a,archive +Oparallel stream_d.f second_wall.o stream_d.f program STREAM external function REALSIZE external subroutine CONFUSE external function CHECKTICK external subroutine CHECKSUMS
413 Lines Compiled
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