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SLURM

Slurm (Simple Linux Utility for Resource Management) es un sistema de gestión de recursos en clusters de computadoras. Nos permite asignar los recursos computacionales (núcleos, memoria, gpu, etc.) de una forma equitativa a medida de su disposición.

Entidades manejadas por los servicios de Slurm

Nodos: Sistema multiprocesador perteneciente al cluster

Particiones: es un mecanismo de agrupar en forma lógica los nodos. Sin importar el número de nodos que se disponen se puede crear la cantidad de particiones que uno desee. Un nodo puede pertenecer a varias particiones. Cada partición tiene sus propios parámetros: tiempo límite de trabajo, usuarios permitidos, que nodos la componen, etc.

Trabajos: Un trabajo o job es la asignación de recursos a un usuario específico por una cantidad de tiempo determinada.

Tareas: Son el conjunto de programas (seriales o paralelas) que serán ejecutadas dentro de un trabajo.

Ejemplos Script Slurm

Tarea: ejecutar programas utilizando gpu
Ejecución: sbatch submit_gpu_job.sh
Partición: gpu
Tiempo máximo: 3 días

submit_gpu_job.sh

                #!/bin/bash
 
                ### Las líneas #SBATCH configuran los recursos de la tarea
                ### (aunque parezcan estar comentadas)
 
                ### Nombre de la tarea
                #SBATCH --job-name=gpu_job
 
                ### Cola de trabajos a la cual enviar.
                #SBATCH --partition=gpu
                #SBATCH --gres=gpu:1
 
                ### Procesos a largar.
                ### Por defecto, se usa un solo proceso para tareas GPU.
                #SBATCH --ntasks-per-node=1
 
                ### Tiempo de ejecucion. Formato dias-horas:minutos.
                #SBATCH --time 3-0:00
 
                ### Script que se ejecuta al arrancar el trabajo
 
                ### Cargar el entorno del usuario incluyendo la funcionalidad de modules
                ### No tocar
                . /etc/profile
 
                ### Cargar los módulos para la tarea
                # FALTA: Agregar los módulos necesarios
                module load gcc
                module load cuda
                ### Largar el programa
                # FALTA: Cambiar el nombre del programa
                srun NOMBRE_DEL_PROGRAMA

Tarea: ejecutar programas utilizando mpi
Ejecución: sbatch submit_mpi_job.sh
Partición: batch
Tiempo máximo: 3 días

LICENSE

BSD 3-Clause License
 
Copyright (c) 2022, varios_iate
All rights reserved.
 
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
 
1. Redistributions of source code must retain the above copyright notice, this
   list of conditions and the following disclaimer.
 
2. Redistributions in binary form must reproduce the above copyright notice,
   this list of conditions and the following disclaimer in the documentation
   and/or other materials provided with the distribution.
 
3. Neither the name of the copyright holder nor the names of its
   contributors may be used to endorse or promote products derived from
   this software without specific prior written permission.
 
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Tarea: ejecutar programas utilizando OPENMP
Ejecución: sbatch openmp
Partición: batch
Tiempo máximo: 3 días

LICENSE

This is free and unencumbered software released into the public domain.
 
Anyone is free to copy, modify, publish, use, compile, sell, or
distribute this software, either in source code form or as a compiled
binary, for any purpose, commercial or non-commercial, and by any
means.
 
In jurisdictions that recognize copyright laws, the author or authors
of this software dedicate any and all copyright interest in the
software to the public domain. We make this dedication for the benefit
of the public at large and to the detriment of our heirs and
successors. We intend this dedication to be an overt act of
relinquishment in perpetuity of all present and future rights to this
software under copyright law.
 
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
 
For more information, please refer to <https://unlicense.org>