nextflow.config: simplify errorStrategy for computing grid

src/nextflow.config

@@ -46,7 +46,7 @@ profiles {
     singularity.cacheDir = "$baseDir/.singularity_psmn/"
     singularity.runOptions = "--bind /Xnfs,/scratch"
     process{
-      errorStrategy { sleep(Math.pow(2, task.attempt) * 200 as long); return 'retry' }
+      errorStrategy 'retry'
       maxRetries 3
       withLabel: big_mem_mono_cpus {
         executor = "sge"
@@ -74,7 +74,7 @@ profiles {
     singularity.cacheDir = "$baseDir/.singularity_in2p3/"
     singularity.runOptions = "--bind /pbs,/sps,/scratch"
     process{
-      errorStrategy { sleep(Math.pow(2, task.attempt) * 200 as long); return 'retry' }
+      errorStrategy 'retry'
       maxRetries 3
       withLabel: big_mem_mono_cpus {
         scratch = true