We would like to inform users about several new features in the MetaCentrum & CERIT-SC infrastructures:
It is possible for users to access GUI applications simply through a web browser. For deatiled information see https://wiki.metacentrum.cz/wiki/Remote_desktop#Quick_start_I_-_Run_GUI_desktop_in_a_web_browser.
The access through VNC client (an older and more complicated way to get GUI) remains unchanged - see https://wiki.metacentrum.cz/wiki/Remote_desktop#Quick_start_II_-_Run_GUI_desktop_in_a_VNC_session and following tutorials.
As a new feature users can now fetch data from finished jobs, including those that finished more than 24 hours ago. For this, use command
If the job is found in the archive, the command will create in current dir a new subdirectory called job_ID (e.g. 11808203.meta-pbs.metacentrum.cz) with several files. Namely, there will be
job_ID.SC - a copy of batch script as passed to qsub
job_ID.ER - standard output (STDOUT) of a job
job_ID.OU - standard error output (STDERR) of a job
For detailed information see https://wiki.metacentrum.cz/wiki/PBS_get_job_history
As a new feature users can now specify a minimum amount of memory the GPU card needs to have. For this there is a new PBS parameter gpu_mem. For example, the command
qsub -q gpu -l select=1:ncpus=2:ngpus=1:mem=10gb:scratch_local=10gb:gpu_mem=10gb -l walltime=24:0:0
makes sure that the GPU card on computational node will have at least 10 GB of memory.
For more information see https://wiki.metacentrum.cz/wiki/GPU_clusters.
We would also like to note that it is better to select GPU machine by specifying the gpu_mem and cuda_cap parameters than by specifying a particular cluster. The former way includes wider set of machines and therefore the shortens the queuing time of jobs.