Re: [Rd] [parallel] fixes load balancing of parLapplyLB

2018-03-01 Thread Christian Krause
is some dynamism in the schedule even by default. I am now > testing a patch with these changes. > > Best > Tomas > > > On 02/20/2018 11:45 AM, Christian Krause wrote: >> Dear Henrik, >> >> The rationale is just that it is within these extremes and t

Re: [Rd] [parallel] fixes load balancing of parLapplyLB

2018-02-20 Thread Christian Krause
cale factor(*) argument where default >future.scheduling = 1 corresponds to (B) and future.scheduling = +Inf >to (A). Using future.scheduling = 4 achieves the amount of >load-balancing you propose in (C). (*) Different definition from the >above 'scale'. (Disclaimer: I'm the author)

Re: [Rd] [parallel] fixes load balancing of parLapplyLB

2018-02-19 Thread Christian Krause
patch fully source-compatible. Best Regards On 02/12/2018 08:08 PM, Christian Krause wrote: > Dear R-Devel List, > > **TL;DR:** The function **parLapplyLB** of the parallel package has > [reportedly][1] (see also attached RRD output) not > been doing its job, i.e. not actually

[Rd] [parallel] fixes load balancing of parLapplyLB

2018-02-12 Thread Christian Krause
he number of chunks is larger than the number of workers, if possible at all, and then load balancing should work. Best Regards -- Christian Krause Scientific Computing Administration and Support

[Rd] [parallel-package] feature request: set default cluster type via environment variable

2016-11-24 Thread Christian Krause
a "parallel environment" with 2 to 20 cores #$ -pe smp 2-20 # set number of cores for the R cluster to the granted value (between 2 and 20) export MC_CORES=$NSLOTS # we want this: export MC_CLUSTER_TYPE=FORK Rscript /path/to/script.R | Best Regards ​ -- Christian Krause Scientific