M. Klute (MIT), D. Piparo (CERN) - CRB Meeting, Sep 24th, 2019 - CMS week

News from O&C L1’s

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2M. Klute, D. Piparo, CRB Meeting, 24-9-19

CMS Production and Release Plan

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3M. Klute, D. Piparo, CRB Meeting, 24-9-19

Computing Resource Request for 2021▶

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Resource Site

2020 CMSApproved Request

(Spring 19)

2021 CMS

Request(Fall 19)

Increase

CPU (kHS06)

T0+CAF 423 517 22%

T1 650 650 0%

T2 1000 1200 20%

Disk (PB)

T0+CAF 26.1 31 18%

T1 68.0 77 13%

T2 78.0 93 19%

Tape (PB)T0+CAF 99 144 45%

T1 220 245 11%▶

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4M. Klute, D. Piparo, CRB Meeting, 24-9-19

WLCG on Tape Efficiency▶

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5M. Klute, D. Piparo, CRB Meeting, 24-9-19

Performance Portability Libraries▶ A solution to keep one codebase for multiple backends

● E.g. CPU, NVidia GPU, <accelerator xyz>

▶ Investigation started and is still ongoing

● Several products investigated: OpenACC, Raja, Kokkos, Alpaka, SYCL, OpenMP, ...

▶ At the moment three credible alternatives:

● Kokkos - Sandia Lab

● Alpaka - Helmholtz-Zentrum Dresden

● SYCL - Khronos Group

▶ Need to gain more experience to make sensible choice

● Patatrack incubator and other efforts

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6M. Klute, D. Piparo, CRB Meeting, 24-9-19

HL-LHC Preparation▶

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7M. Klute, D. Piparo, CRB Meeting, 24-9-19

Code Modernisation and Performance Working Group▶▶

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Call for Conveners Open!Send your nominations to

danilo.piparo@cern.ch and klute@mit.edu

Link to the Mandate

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8M. Klute, D. Piparo, CRB Meeting, 24-9-19

Offline Software and Computing Events▶

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9M. Klute, D. Piparo, CRB Meeting, 24-9-19

Conclusions

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