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BobMALCS

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Message 63627 - Posted: 23 May 2015, 11:01:44 UTC

How are GFLOPs estimated or calculated. There doesn't seem to be any consistency in the reported numbers.

Name de_modfit_fast_15_3s_136_simmodBPL2_2_1431361803_4336824_2
Workunit 830749579
Created 23 May 2015, 7:25:19 UTC
Sent 23 May 2015, 7:26:07 UTC
Report deadline 4 Jun 2015, 7:26:07 UTC
Received 23 May 2015, 8:25:06 UTC
Server state Over
Outcome Success
Client state Done
Exit status 0 (0x0)
Computer ID 540117
Run time 1 min 10 sec
CPU time 4 sec
Validate state Checked, but no consensus yet
Credit 0.00
Device peak FLOPS 3,204.33 GFLOPS
Application version Milkyway@Home Separation (Modified Fit) v1.36 (opencl_ati_101)
Peak working set size 86.33 MB
Peak swap size 84.62 MB
Peak disk usage 0.01 MB


Stderr output
<core_client_version>7.4.42</core_client_version>
<![CDATA[
<stderr_txt>
<search_application> milkyway_separation 1.36 Windows x86_64 double OpenCL </search_application>
Reading preferences ended prematurely
BOINC GPU type suggests using OpenCL vendor 'Advanced Micro Devices, Inc.'
Error loading Lua script 'astronomy_parameters.txt': [string "number_parameters: 4..."]:1: '<name>' expected near '4'
Switching to Parameter File
Using AVX path
Found 1 platform
Platform 0 information:
Name: AMD Accelerated Parallel Processing
Version: OpenCL 2.0 AMD-APP (1642.5)
Vendor: Advanced Micro Devices, Inc.
Extensions: cl_khr_icd cl_khr_d3d10_sharing cl_khr_d3d11_sharing cl_khr_dx9_media_sharing cl_amd_event_callback cl_amd_offline_devices
Profile: FULL_PROFILE
Using device 0 on platform 0
Found 1 CL device
Device 'Capeverde' (Advanced Micro Devices, Inc.:0x1002) (CL_DEVICE_TYPE_GPU)
Board: AMD Radeon HD 7700 Series
Driver version: 1642.5 (VM)
Version: OpenCL 1.2 AMD-APP (1642.5)
Compute capability: 0.0
Max compute units: 10
Clock frequency: 1000 Mhz
Global mem size: 1073741824
Local mem size: 32768
Max const buf size: 65536
Double extension: cl_khr_fp64
Estimated AMD GPU GFLOP/s: 100 SP GFLOP/s, 20 DP FLOP/s
Warning: Bizarrely low flops (20). Defaulting to 100
Using a target frequency of 60.0
Using a block size of 2560 with 19 blocks/chunk
Using clWaitForEvents() for polling (mode -1)
Range: { nu_steps = 320, mu_steps = 800, r_steps = 700 }
Iteration area: 560000
Chunk estimate: 11
Num chunks: 12
Chunk size: 48640
Added area: 23680
Effective area: 583680
Initial wait: 13 ms
Integration time: 65.731973 s. Average time per iteration = 205.412417 ms
Integral 0 time = 65.864070 s
Running likelihood with 108458 stars
Likelihood time = 1.787655 s
<background_integral> 0.000361029167651 </background_integral>
<stream_integral> 63.995507610904923 58.438187078859428 15.946579625183142 </stream_integral>
<background_likelihood> -3.113372777326546 </background_likelihood>
<stream_only_likelihood> -6.106013382804428 -6.195289213122145 -5.679857976626582 </stream_only_likelihood>
<search_likelihood> -2.696424284356353 </search_likelihood>
08:46:19 (3744): called boinc_finish

</stderr_txt>
]]>


BobM
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Message boards : Number crunching : GFLOPs estimation ?

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