[libc][Docs] Update the GPU RPC documentation #79069
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jhuber6
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@llvm/pr-subscribers-libc Author: Joseph Huber (jhuber6) ChangesSummary: Patch is 75.70 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/79069.diff 3 Files Affected:
diff --git a/libc/docs/gpu/rpc-diagram.svg b/libc/docs/gpu/rpc-diagram.svg
new file mode 100644
index 000000000000000..eb9b807e52004ee
--- /dev/null
+++ b/libc/docs/gpu/rpc-diagram.svg
@@ -0,0 +1 @@
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[truncated]
|
lntue
approved these changes
Jan 23, 2024
Summary: This adds some more concrete information on the RPC interface. Hopefully this is intelligable and provides some useful examples.
| shared communicate channel between the two processes. This memory is often | ||
| pinned memory that can be accessed asynchronously and atomically by multiple | ||
| processes simultaneously. This supports means that we can simply provide mutual | ||
| exclusion on a shared better to swap work back and forth between the host system |
| using this shared memory. | ||
|
|
||
| This work treats the GPU as a client and the host as a server. The client | ||
| initiates a communication while the server listens for them. In order to |
| * The server reads the data from the fixed-size packet. | ||
| * The server writes its data to the fixed-size packet and toggles its outbox. | ||
| * The server closes the port and continues searching for ports that need to be | ||
| serviced |
| .. code-block:: sh | ||
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| $> clang++ -x cuda rpc.cpp --offload-arch=native -fgpu-rdc -lcudart -lcgpu \ | ||
| -I<install-path>include -L<install-path>/lib -lllvmlibc_rpc_server \ |
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add / before include for the -I to be consistent with -L
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Summary:
This adds some more concrete information on the RPC interface. Hopefully
this is intelligable and provides some useful examples.