File: lower_insert_syncs.h

package info (click to toggle)
pytorch 1.13.1%2Bdfsg-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 139,252 kB
  • sloc: cpp: 1,100,274; python: 706,454; ansic: 83,052; asm: 7,618; java: 3,273; sh: 2,841; javascript: 612; makefile: 323; xml: 269; ruby: 185; yacc: 144; objc: 68; lex: 44
file content (31 lines) | stat: -rw-r--r-- 938 bytes parent folder | download
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
#pragma once

#include <c10/macros/Export.h>

#include <torch/csrc/jit/codegen/cuda/ir_all_nodes.h>
#include <torch/csrc/jit/codegen/cuda/kernel_ir.h>

#include <vector>

namespace torch {
namespace jit {
namespace fuser {
namespace cuda {

//! Insert sync at end of for-loops to prevent write-after-read race condition.
//!
//! WAR race condition occurs when the next iteration of the loop overwrites
//! shared memory value before a previous operation has finished reading it.
std::vector<Expr*> insertWarThreadSynchronization(
    const std::vector<Expr*>& exprs);

//! Insert syncs between writing to shared memory and then reading it.
//! RAW pass is run before indexing, unrolling (loop duplication), memory
//! aliasing, and index (grid/block bcast/reduction)
std::vector<Expr*> insertRawThreadSynchronization(
    const std::vector<Expr*>& exprs);

} // namespace cuda
} // namespace fuser
} // namespace jit
} // namespace torch