slow work

Anonymous
Topic 13500

Quote:

Here's the link to Dr. Allen's post on the matter:

Long WU Criteria

The only part I'm not clear on is how they determine the credit per CPU second.

Essentially it works out that roughly 1GHz class hosts and faster will get long WUs.

Alinator

Hosts whose benchmarks place them among the slowest 20% of hosts are given short WU if possible. The remaning 80% of machines get both slow and fast WU.

Cheers,
Bruce

Bruce Allen
Bruce Allen
Joined: 15 Oct 04
Posts: 958
Credit: 170,849,008
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slow work

Quote:
Quote:
Quote:

Here's the link to Dr. Allen's post on the matter:

Long WU Criteria

The only part I'm not clear on is how they determine the credit per CPU second.

Essentially it works out that roughly 1GHz class hosts and faster will get long WUs.

Alinator

Hosts whose benchmarks place them among the slowest 20% of hosts are given short WU if possible. The remaning 80% of machines get both slow and fast WU.

Cheers,
Bruce

Hi Dr. Allen,

That part I got. Here's a snippet from the last contact log from my P4:

2006-11-19 06:21:14.7627 [PID=18514] [normal ] [HOST#656342] [RESULT#53452272 l1_1408.5_S5R1__322_S5R1a_1] got result (DB: server_state=4 outcome=0 client_state=0 validate_state=0 delete_state=0)
2006-11-19 06:21:14.7627 [PID=18514] [debug ] cpu 31471.171875 cpcs 0.003723, cc 111.696181

The part I'm not getting is how the CPCS is calculated. If you multiply the shown CPCS and the CPU seconds reported you get a credit value of 117.167173, which doesn't match the reported CC value of 111.696181. When I calculate CPCS manually I get 0.003549.

Not much of a difference I grant you, but it's a "mystery" and I hate computational mysteries! :-)

Regards,

Alinator

Your machine must have microscopic benchmark values. What happens if you use the BOINC manager to re-run the benchmarks when the machine is idle? Do the benchmark values change? Note: you can find the benchmark values in client_state.xml

Bruce

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