Posted in 2023
3 Nov, 2023 by
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15 Sept, 2023 by
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Goal : The machine learning ecosystem is quickly exploding and we aim to make
porting to AMD GPUs simple with this series of machine learning blogposts.
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18 Jul, 2023 by
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MPI is the de facto standard for inter-process communication in High-Performance
Computing. MPI processes compute on their local data while extensively communicating
with each other. This enables MPI programs to be executed on systems with a distributed
memory space e.g. clusters. There are different types of communications supported
in MPI including point-to-point and collective communications. Point-to-point
communication is the basic communication mechanism in which both the sending
process and the receiving process take part in the communication. The sender
has a buffer that holds the message and an envelope containing information
that will be used by the receiver side (e.g., message tag, the sender rank number,
etc.). The receiver uses the information in the envelope to select the specified
message and stores it in its receiver buffer. In collective communication,
messages can be exchanged among a group of processes rather than just two of
them. Collective communication provides opportunities for processes to perform
one-to-many and many-to-many communications in a convenient, portable and
optimized way. Some examples of collective communications include broadcast,
allgather, alltoall, and allreduce.
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Register pressure in GPU kernels has a tremendous impact on the overall performance
of your HPC application. Understanding and controlling register usage allows developers
to carefully design codes capable of maximizing hardware resources. The following blog
post is focused on a practical demo showing how to apply the recommendations explained in this
OLCF training talk presented on August 23rd 2022. Here is the
training archive where you
can also find the slides. We focus solely on the AMD CDNA™2 architecture (MI200 series GPUs)
using ROCm 5.4.
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11 May, 2023 by
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Getting a code to be functionally correct is not always enough. In many industries,
it is also required that applications and their complex software stack run as efficiently
as possible to meet operational demands. This is particularly challenging as hardware
continues to evolve over time, and as a result codes may require further tuning.
In practice, many application developers construct benchmarks, which are carefully designed
to measure the performance, such as execution time, of a particular code within an
operational-like setting. In other words: a good benchmark should be representative
of the real work that needs to be done. These benchmarks are useful in that they provide
insight into the characteristics of the application, and enables one to discover potential
bottlenecks that could result in performance degradation during operational settings.
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The HIP API supports a wide variety of allocation methods for host and device memory
on accelerated systems. In this post, we will:
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AMD ROCm™ is the first open-source software development platform for HPC/Hyperscale-class
GPU computing. AMD ROCm™ brings the UNIX philosophy of choice, minimalism and modular software
development to GPU computing. Please see the AMD
Open Software Platform for GPU Compute
and ROCm Informational Portal pages for more information.
Read more ...
4 Jan, 2023 by
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