[Bioc-devel] BiocParallel-devel error

[Valerie Obenchain]

Hi,

Martin and I looked into this a bit. It looks like a problem with 
handling an 'undefined error' returned from a worker (i.e., job did not 
run). When there is a problem executing the tmpl script no error message 
is sent back. The NULL is coerced to simpleError and becomes a problem 
downstream when the error processing is expecting messages of length > 0.

You can reproduce the error by putting a typo in the script. For example 
replace R with something bogus such as MYR in this line:

MYR CMD --no-save --no-restore "<%= rscript %>" /dev/stdout

You said the script worked with release but not devel. Is it possible 
there's a problem with how R devel is being called on the cluster?

Michel Lang (cc'd) implemented BatchJobs in BiocParallel. I'd like to 
get his opinion on how he wants to handle this type of error.
Michel, let me know if you need more details, I can send another example 
off-line.

Valerie



On 09/22/2014 02:58 PM, Valerie Obenchain wrote:
> Hi Thomas,
>
> Just wanted to let you know I saw this and am looking into it.
>
> Valerie
>
> On 09/20/2014 02:54 PM, Thomas Girke wrote:
>> Hi Martin, Micheal and Vincent,
>>
>> If I run the following code, with the release version of BiocParallel
>> then it
>> works (took me some time to actually realize that), but with the
>> development
>> version I am getting an error shown after the test code below. If I
>> run the
>> same test with BatchJobs from the devel branch alone then there is no
>> problem.
>> Thus, it seems there is some change in the devel version of BiocParallel
>> causing this error? The torque.tmpl file I am using on our cluster is the
>> standard one from BatchJobs here:
>> https://github.com/tudo-r/BatchJobs/blob/master/examples/cfTorque/simple.tmpl
>>
>>
>> For my application, I could stick with BatchJobs, but it would be
>> nicer if I
>> could get things to work with BiocParallel.
>>
>> Thanks,
>>
>> Thomas
>>
>> ###############
>> ## Test Code ##
>> ###############
>> FUN <- function(i) system("hostname", intern=TRUE)
>> library(BiocParallel); library(BatchJobs)
>> funs <- makeClusterFunctionsTorque("torque.tmpl")
>> param <- BatchJobsParam(4, resources=list(walltime="48:00:00",
>> nodes="1:ppn=4", memory="4gb"), cluster.functions=funs)
>> register(param)
>> xx <- bplapply(1:4, FUN)
>>
>> Error: 4 errors; first error:
>>
>> For more information, use bplasterror(). To resume calculation,
>> re-call the function and
>> set the argument 'BPRESUME' to TRUE or wrap the previous call in
>> bpresume()
>>
>>> bplasterror()
>> Error in vapply(head(which(is.error), n.print), f, character(1L)) :
>>    values must be length 1,
>>   but FUN(X[[1]]) result is length 0
>>
>>> sessionInfo()
>> R Under development (unstable) (2014-05-05 r65530)
>> Platform: x86_64-unknown-linux-gnu (64-bit)
>>
>> locale:
>> [1] C
>>
>> attached base packages:
>> [1] stats     graphics  utils     datasets  grDevices methods   base
>>
>> other attached packages:
>> [1] BatchJobs_1.3        BBmisc_1.7           BiocParallel_0.99.19
>>
>> loaded via a namespace (and not attached):
>>   [1] BiocGenerics_0.11.4 DBI_0.3.0           RSQLite_0.11.4
>> brew_1.0-6          checkmate_1.4       codetools_0.2-9
>> digest_0.6.4        fail_1.2            foreach_1.4.2
>> iterators_1.0.7
>> [11] parallel_3.2.0      sendmailR_1.1-2     stringr_0.6.2
>> tools_3.2.0
>>
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>>
>
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