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Hi. I don't know what is causing this. I have written two different codes, and I wanted to use a subroutine I wrote, in both codes. The thing is that this subroutine calls DGELS to do some computations. But in one code it works fine, and in the other gives a wrong result. I don't really know...

Hi. The cluster where I work started to have problems after the old administrator who worked at it leave the job. I am trying to figure out what is causing that when a job is submitted on multiple nodes, problems appear. error: executing task of job 68 failed: execution daemon on host...

Hi. I have this error which only occurs when I try to run my code in a cluster. In my desktop computer I run it in parallel without any problem. [compute-0-2:76201] *** Process received signal *** [compute-0-2:76201] Signal: Segmentation fault (11) [compute-0-2:76201] Signal code: Address not...

I am using a subroutine in a code I have written, which used modules. Something weird happens when I compile the code with the module that corresponds to this subroutine. Actually, the whole subroutine is called as a module (it is an open access subroutine). The thing is that, in order to...

Hi. I have this doubt. I have written a code that integrates by means of the composite Simpsons rule: https://en.wikipedia.org/wiki/Simpson%27s_rule#Composite_Simpson's_rule As can be seen in the wikipedia article, the weights are distributed according to the point where we are evaluating the...

Hi. I have been measuring the scalability of some codes I have written in Fortran, and parallelized with MPI. The thing is if I have been doing it properly (the code scales, however, I would expect it to scale a little bit more with the number of processors). I am using an amd ryzen 7 1700 8...

Hi there. I have written a code, as a series of subroutines. The code works properly, it does the job. However, I've written it for the first time in FORTRAN77 (don't ask why, I wish I wouldn't). And then I passed it to Fortran90, because I needed dynamic arrays to work with MPI. However, I...