1 | /** |
---|---|
2 | * Copyright (c) 2018-present, Facebook, Inc. |
3 | * All rights reserved. |
4 | * |
5 | * This source code is licensed under the BSD-style license found in the |
6 | * LICENSE file in the root directory of this source tree. |
7 | */ |
8 | |
9 | #pragma once |
10 | |
11 | #include "gloo/common/logging.h" |
12 | #include "gloo/context.h" |
13 | #include "gloo/transport/unbound_buffer.h" |
14 | |
15 | namespace gloo { |
16 | |
17 | class AlltoallOptions { |
18 | public: |
19 | explicit AlltoallOptions(const std::shared_ptr<Context>& context) |
20 | : context(context), timeout(context->getTimeout()) {} |
21 | |
22 | template <typename T> |
23 | void setInput(std::unique_ptr<transport::UnboundBuffer> buf) { |
24 | elementSize = sizeof(T); |
25 | in = std::move(buf); |
26 | } |
27 | |
28 | template <typename T> |
29 | void setInput(T* ptr, size_t elements) { |
30 | elementSize = sizeof(T); |
31 | in = context->createUnboundBuffer(ptr, elements * sizeof(T)); |
32 | } |
33 | |
34 | template <typename T> |
35 | void setOutput(std::unique_ptr<transport::UnboundBuffer> buf) { |
36 | elementSize = sizeof(T); |
37 | out = std::move(buf); |
38 | } |
39 | |
40 | template <typename T> |
41 | void setOutput(T* ptr, size_t elements) { |
42 | elementSize = sizeof(T); |
43 | out = context->createUnboundBuffer(ptr, elements * sizeof(T)); |
44 | } |
45 | |
46 | void setTag(uint32_t tag) { |
47 | this->tag = tag; |
48 | } |
49 | |
50 | void setTimeout(std::chrono::milliseconds timeout) { |
51 | GLOO_ENFORCE(timeout.count() > 0); |
52 | this->timeout = timeout; |
53 | } |
54 | |
55 | protected: |
56 | std::shared_ptr<Context> context; |
57 | std::unique_ptr<transport::UnboundBuffer> in; |
58 | std::unique_ptr<transport::UnboundBuffer> out; |
59 | |
60 | // Number of bytes per element. |
61 | size_t elementSize = 0; |
62 | |
63 | // Tag for this operation. |
64 | // Must be unique across operations executing in parallel. |
65 | uint32_t tag = 0; |
66 | |
67 | // End-to-end timeout for this operation. |
68 | std::chrono::milliseconds timeout; |
69 | |
70 | friend void alltoall(AlltoallOptions&); |
71 | }; |
72 | |
73 | void alltoall(AlltoallOptions& opts); |
74 | |
75 | } // namespace gloo |
76 |