Folding Forum

In the past, I have been successfully running FAH v6 on a linux box with the -smp option. It runs fine with FahCore_a3.exe using both cores of an old Pentium D.

From FAHlog.txt, it appears that -np 2 would indicate 2 processors:
Calling './FahCore_a3.exe -dir work/ -nice 19 -suffix 09 -np 2 -checkpoint 30 -verbose -lifeline 27050 -version 634'

I recently installed FAHClient v7 on this machine and I'm running FahCore_a4 (Gromacs GB Core), but I only see it using one core. It shows the following in the log file:

<!-- Folding Slot Configuration -->
19:54:22: <cause v='ANY'/>
19:54:22: <client-subtype v='LINUX'/>
19:54:22: <client-type v='normal'/>
19:54:22: <cpu-species v='UNKNOWN'/>
19:54:22: <cpu-type v='AMD64'/>
19:54:22: <cpus v='-1'/>
19:54:22: <cuda-index v='0'/>
19:54:22: <gpu v='false'/>
19:54:22: <max-packet-size v='normal'/>
19:54:22: <opencl-index v='0'/>
19:54:22: <os-species v='UNKNOWN'/>
19:54:22: <os-type v='LINUX'/>
19:54:22: <power v='medium'/>
19:54:22: <project-key v='0'/>
19:54:22: <smp v='true'/>

I also see this in log.txt:
Running FahCore: /usr/bin/FAHCoreWrapper ./FahCore_a4 -dir 00 -suffix 01 -version 703 -lifeline 28286 -checkpoint 30

It does not look to me like it passed any information to FAhCore_a4 regarding number of processors. I can tell from the processor activity that only one core is being used.

Is there something I need to configure in config.xml in order to get this to client to use SMP with both cores?

You need to set the process/folding level to "Full" By default it is set at low or moderate.. or whatever it is, which runs at n-1, so for you, 2 cores -1 = 1 core.

Its a slider in nthe windows version.

Oh oh..

See in your config it says power = medium... it needs to be full.

Thanks for that suggestion ...

Per your recommendation, I set the "Folding Power" slider in FAHControl to Full and the folding slots now indicates cpu:2

From the log file when i restarted the client, it now shows:

22:09:07: <!-- Folding Slot Configuration -->
22:09:07: <cause v='ANY'/>
22:09:07: <client-subtype v='LINUX'/>
22:09:07: <client-type v='normal'/>
22:09:07: <cpu-species v='UNKNOWN'/>
22:09:07: <cpu-type v='AMD64'/>
22:09:07: <cpus v='-1'/>
22:09:07: <cuda-index v='0'/>
22:09:07: <gpu v='false'/>
22:09:07: <max-packet-size v='normal'/>
22:09:07: <opencl-index v='0'/>
22:09:07: <os-species v='UNKNOWN'/>
22:09:07: <os-type v='LINUX'/>
22:09:07: <power v='full'/>
22:09:07: <project-key v='0'/>
22:09:07: <smp v='true'/>

22:09:07:Enabled folding slot 00: READY cpu:2

However, when I look at my processor activity, it still appears that it is still only using one core.
(One core is 100% active and the other is just idle)
Is there something else that needs to be set or activated to get smp to work?

The servers still distinguish between smp and uniprocessor.
Since you were cpu:1 when you downloaded a WU, you were probably assigned a uniprocessor one.
When it finishes, the next WU downloaded will use 2 cpus.

That makes sense .... thanks for the help guys.

I'll let it finish this WU ... probably take it a couple of days as it's a rather ancient beast. It also runs a v6 GPU client (using wine), so it keeps busy.