Questions tagged [high-performance]
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34 questions
0votes
1answer
53views
Is sbatch-inside-sbatch a bad idea?
On a slurm cluster, is there ever a time when it’s appropriate to use sbatch inside an sbatch script? Or is it always a bad pattern? I’ve seen this in use, and it looks iffy: #SBATCH -J ...
- 672
0votes
1answer
30views
how to configure or tune infiniband redhat 8
I asked a similar question here : NFS v4.2 tuning with less than 50 servers on a closed infiniband [mellanox] HDR network switch all running RHEL-8.10: is there anything other than systemctl start ...
- 8,311
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16views
How to set new features to N during kernel compilation from an old .config file?
I am compiling a custom linux kernel for a compute cluster. The cluster is currently running on kernel version 4.4.47 since last 5 years. I need to upgrade the kernel to a more recent version. I've ...
- 101
0votes
1answer
209views
NFS v4.2 tuning
https://www.youtube.com/watch?v=JXASmxGrHvY at 5:30 the statement is made if you get NFS tuned just right it is incredibly fast for ultra small file transfers*... at 6:05 I've heard of 4.0GB/sec ...
- 8,311
2votes
0answers
92views
Data Recovery from RAID 1 - Impossible to mount disk
I have an Nvidia DGXA100 station that I use for my research. It has started to shut down brutally (just a couple minutes after startup), probably a watercooling pump breaking down (that would be the ...
- 21
-2votes
1answer
479views
How to display only the number of jobs running in HPC by specific user?
I want to Display only the number of jobs running in the HPC related to my username! I don't wanna see all the jobs as the command squeue does! Thanks!
0votes
0answers
127views
Is it possible to install Virtual Box or other free virtual machines on a cluster?
We have a CentOS HPC cluster and despite asking, the admins do not like to give us root access. I have more experience with finding the packages I need in Ubuntu's apt and conda-forge etc. I am ...
- 101
0votes
1answer
553views
Why is RAMFS much slower than Ram?
I have a 64GB DDR4 3200MHz memory installed on my PC. When I run sysbench, I get the following results: # sysbench memory --memory-block-size=1M --memory-total-size=10G run sysbench 1.0.20 (using ...
- 153
1vote
0answers
99views
slub_min_objects : How comes 0 can stand as a valid / default value / rationale?
In the comments of the source code (mm/slub.c) of my linux_5.4 kernel, I can read : In order to reach satisfactory performance we must ensure that a minimum number of objects is in one slab. Otherwise ...
- 8,497
0votes
2answers
88views
Is It Possible To Track GPU Performance Increase?
CentOS7 I'm about to upgrade my gpu. Before I take action I am curious if there are any tests I can run on the cli that will track the performance of my current gpu so I can compare to the new gpu? ...
0votes
1answer
432views
How to tune the linux Scheduler for parallel computation?
I have a linux machine dedicated to running some parallel computation, and I'm trying to understand how to choose / tune the scheduler, and perhaps other parameters, to extract the most performance (...
- 101
11votes
2answers
6kviews
Set CPU to high performance
I spent hours searching for an answer in Internet. All I could find doesn't help. I have Intel i9-9980HK, running under Ubuntu 20.04, kernel 5.4.0-33. The problem is that under the full load the CPU ...
- 308
3votes
0answers
1kviews
How can I display graphics on the screen from the kernel over the top of my X11/Wayland session?
I want to draw simple (2D bitmapped) graphics onto my screen (in response to (simple) external inputs) with the lowest latency possible (the order of tens of milliseconds) so I can empirically test ...
- 1,077
1vote
1answer
468views
Live changing bjobs output
When using LSF command bjobs, I would like to get instantly changing output if I submit another job, because I feel stressful to run the same command again and again. I would like something like top ...
1vote
1answer
132views
Is LSF queue allowed to preempt itself?
I have an LSF queue, say it's queue A. I only want higher priority jobs in queue A to preempt lower priority jobs in queue A, but not jobs in any other queues. If I set queue A to be preemptable, ...
- 11
