Translations:Narval/16/en: Difference between revisions

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=AMD processors=
=AMD processors=
== Supported instructions sets ==
== Supported instructions sets ==
Narval is equipped with 2nd and 3rd generation  AMD EPYC processors which support [https://en.wikipedia.org/wiki/Advanced_Vector_Extensions#Advanced_Vector_Extensions_2 AVX2 instructions]. This instruction set is identical to the one used by INTEL processors on the [[Béluga/en#Node_characteristics|Béluga]], [[Cedar#Node_characteristics|Cedar]], [[Graham#Node_characteristics|Graham]] and [[Niagara#Node_characteristics|Niagara]] nodes. The Narval AMD processors and the Intel processors of the [https://en.wikipedia.org/wiki/Haswell_(microarchitecture) Haswell] generation are both restricted to AVX2 and earlier instructions. As such, applications compiled on a [[Cedar#Node_characteristics|Cedar]] or [[Graham#Node_characteristics|Graham]] Broadwell node should function on Narval, otherwise you will need to recompile with the appropriate architecture parameters (see ''Intel compilers'' below).
Narval is equipped with 2nd and 3rd generation  AMD EPYC processors which support the [https://en.wikipedia.org/wiki/Advanced_Vector_Extensions#Advanced_Vector_Extensions_2 AVX2 instruction set]. This instruction set is also supported by all CPUs at [[Béluga/en#Node_characteristics|Béluga]], [[Cedar#Node_characteristics|Cedar]], [[Graham#Node_characteristics|Graham]] and [[Niagara#Node_characteristics|Niagara]].
 
However, all nodes at Béluga and Niagara and ''some'' nodes at Cedar and Graham also support [https://en.wikipedia.org/wiki/AVX-512 AVX512] instructions, which are ''not'' supported at Narval.

Revision as of 21:00, 24 October 2021

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Message definition (Narval)
==Particularités liées aux processeurs AMD==
===Ensemble d'instructions pris en charge===
La grappe Narval est équipée de processeurs AMD EPYC de 2e et 3e génération qui prennent en charge les instructions [https://fr.wikipedia.org/wiki/Advanced_Vector_Extensions#Advanced_Vector_Extensions_2 AVX2]. Cet ensemble d'instructions est le même que celui des processeurs Intel que l'on retrouve sur les nœuds de [[Béluga#Caract.C3.A9ristiques_des_n.C5.93uds|Béluga]], [[Cedar/fr#Caract.C3.A9ristiques_des_n.C5.93uds|Cedar]], [[Graham/fr#Caract.C3.A9ristiques_des_n.C5.93uds|Graham]] et [[Niagara/fr#Caract.C3.A9ristiques_des_n.C5.93uds|Niagara]].<br>

AMD processors

Supported instructions sets

Narval is equipped with 2nd and 3rd generation AMD EPYC processors which support the AVX2 instruction set. This instruction set is also supported by all CPUs at Béluga, Cedar, Graham and Niagara.

However, all nodes at Béluga and Niagara and some nodes at Cedar and Graham also support AVX512 instructions, which are not supported at Narval.

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