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4 messages · jean-michel nguyen, Roman Luštrik, Joshua Ulrich +1 more
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This has been discussed on this list several times. R has a hard-coded limit of 128 total simultaneous open socket connections. You could try rebuilding R after increasing NCONNECTIONS in src/main/connections.c. Best, -- Joshua Ulrich | about.me/joshuaulrich FOSS Trading | www.fosstrading.com On Fri, Jan 31, 2014 at 10:30 PM, jean-michel nguyen
<jean_michel_nguyen at yahoo.fr> wrote:
Dear all
Is it possible to use more than 120 CPU in Snowfall ? (CPUsMax=240) do not work
Thank a lot
Nguyen jm
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Sure! I'm running 382 hyperthreaded CPUs on an MPI cluster with no
problem as I'm typing now. I just use the following lines:
cpus <- 382 # Number of CPUs to cluster together
sfSetMaxCPUs(cpus) # Use when plan more than 32 CPUs
sfInit(parallel=T, cpus=cpus, slaveOutfile="initfile", type="MPI")
# Initialize MPI cluster
stopifnot(sfCpus()==cpus) # Confirm set up CPUs properly
stopifnot(sfParallel()==TRUE) # Confirm now running in parallel
Cheers,
Phil
On 2/1/2014 12:05 AM, jean-michel nguyen wrote:
Dear all Is it possible to use more than 120 CPU in Snowfall ? (CPUsMax=240) do not work Thank a lot Nguyen jm [[alternative HTML version deleted]]
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Phil Novack-Gottshall Associate Professor Department of Biological Sciences Benedictine University 5700 College Road Lisle, IL 60532 pnovack-gottshall at ben.edu Phone: 630-829-6514 Fax: 630-829-6547 Office: 332 Birck Hall Lab: 107 Birck Hall http://www1.ben.edu/faculty/pnovack-gottshall ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~