Sylvain Jeaugey
6aae379278
Network user buffer support for collectives * Leverage user buffer registration to achieve zero-copy inter-node communications for Ring, NVLS and Collnet Add RAS subsystem * Create a RAS thread keeping track of all NCCL communicators. * Add a ncclras tool contacting the RAS thread and getting a report. Add fp8 support * Add support for e5m2 and e4m3 8-bit floating point operations. * Use Tree/PAT algorithms when possible for better numerical stability. Add NIC fusion * Add a NET API to ask the network plugin to fuse a set of interfaces together. * Fuse multiple NICs under the same PCI switch as a single, larger NIC. Socket connection failure retry * Retry in case of socket connection failure (unreachable host) * Avoid "Software caused connection abort" errors on retries QP connection failure retry * Retry in case of IB QP connection failure during ibv_modify_qp. NET API improvements * Allow plugins to force a flush in case data and completion ordering is not guaranteed. * Indicate when completion is not needed (e.g. for the LL128 protocol), allowing plugins to skip generating a completion. * Allow for full offload of allgather operations when using one GPU per node. NCCL_ALGO/NCCL_PROTO strict enforcement * Extend NCCL_ALGO/NCCL_PROTO syntax to be able to specify ALGO/PROTO filters for each collective operation. * Strictly enforce the ALGO/PROTO filters, no longer fall back on the ring algorithm when the filtering leaves no option and error out instead. Enable CUMEM host allocations * Use cumem functions for host memory allocation by default. Improved profiler plugin API * Avoid dependencies with NCCL includes. * Add information on whether the buffer is registered or not Adjust PAT tuning * Improve transition between PAT and ring at scale. Fix hangs when running with different CPU architectures * Detect when we use a mix of GPU architectures * Ensure Algo/Proto decisions are made based on that unified state. Fix FD leak in UDS * Fix a leak when mapping buffers intra-node with cumem IPCs. Fix crash when mixing buffer registration and graph buffer registration. * Separate local and graph registration to avoid crashes when we free buffers. Fix user buffer registration with dmabuf * Make ncclSend/ncclRecv communication with buffer registration functional on network plugins relying on dmabuf for buffer registration. Fix crash in IB code caused by uninitialized fields. Fix non-blocking ncclSend/ncclRecv * Fix case where ncclSend/ncclRecv would return ncclSuccess in non-blocking mode even though the operation was not enqueued onto the stream. * Issue #1495 Various compiler tweaks and fixes * PR #758 Fix typo in ncclTopoPrintGraph * Issue #1468
32 baris
1.2 KiB
C
32 baris
1.2 KiB
C
/*************************************************************************
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* Copyright (c) 2023-2023, NVIDIA CORPORATION. All rights reserved.
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*
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* See LICENSE.txt for license information
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************************************************************************/
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#ifndef NET_DEVICE_H_
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#define NET_DEVICE_H_
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#define NCCL_NET_DEVICE_INVALID_VERSION 0x0
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#define NCCL_NET_MTU_SIZE 4096
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// Arbitrary version number - A given NCCL build will only be compatible with a single device networking plugin
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// version. NCCL will check the supplied version number from net->getProperties() and compare to its internal version.
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#define NCCL_NET_DEVICE_UNPACK_VERSION 0x7
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typedef enum {NCCL_NET_DEVICE_HOST=0, NCCL_NET_DEVICE_UNPACK=1} ncclNetDeviceType;
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typedef struct {
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ncclNetDeviceType netDeviceType; // Network offload type
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int netDeviceVersion; // Version number for network offload
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void* handle;
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size_t size;
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int needsProxyProgress;
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} ncclNetDeviceHandle_v7_t;
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typedef ncclNetDeviceHandle_v7_t ncclNetDeviceHandle_v8_t;
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typedef ncclNetDeviceHandle_v8_t ncclNetDeviceHandle_v9_t;
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typedef ncclNetDeviceHandle_v9_t ncclNetDeviceHandle_t;
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#endif
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