An Array API for FDM Intro Move towards ultrascale computing - - PowerPoint PPT Presentation

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Apr 19, 2023 28 likes •208 views

An Array API for FDM Intro Move towards ultrascale computing Uniform mapping Hierarchical memory (Processor -> Core LM, Accelerator LM, Core SM, Accelerator/Processor SM) Message Passing and Partitioned Global Address Space

SLIDE 1

An Array API for FDM

SLIDE 2

Intro

Move towards ultrascale computing
Uniform mapping
Hierarchical memory
(Processor -> Core LM, Accelerator LM, Core SM, Accelerator/Processor SM)
Message Passing and Partitioned Global Address Space
CUDA and Hybrid models
Problem with porting

SLIDE 3

Array API

Linear indices -> Hierarchical memory
Don’t have to rely on compilers
Problem space -> Linear Array
Reusable (generics)
Collective operations

SLIDE 4

Burgers equation (Finite difference method)

SLIDE 5

In 3D

SLIDE 6

In 3D

SLIDE 7

In Code

SLIDE 8

Multiarray API

SLIDE 9

Multiarray API

SLIDE 10

Multiarray API

SLIDE 11

Multiarray API

SLIDE 12

Linear array API

SLIDE 13

Linear array API

SLIDE 14

Multiarray Library

SLIDE 15

Multiarray Library

SLIDE 16

Implementations

CPU C++
C++ arrays
Cuda
Linear structure on device
CudaBuffer
Buffer created at start

SLIDE 17

Runtime results

SLIDE 18