File size: 2,776 Bytes
a3f2e4d | 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 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 | # Copyright (c) Microsoft Corporation.
# Licensed under the MIT License.
"""Rasteration Plan For L2 Cache Locality"""
from typing import List
class Rasterization:
panel_width_ = None
def __init__(self) -> None:
pass
def get_code(self) -> List[str]:
raise NotImplementedError()
@property
def panel_width(self):
assert self.panel_width_ is not None
return self.panel_width_
class NoRasterization(Rasterization):
def __init__(self) -> None:
super().__init__()
def __repr__(self) -> str:
return "<NoRasterization>"
def get_code(self) -> List[str]:
return []
class Rasterization2DRow(Rasterization):
"""
Rasterization by Row, each Row line width is panel_width
_________
_________|
|_________
__________|
"""
def __init__(self, panel_width=4) -> None:
super().__init__()
self.panel_width_ = panel_width
def __repr__(self) -> str:
return f"<Rasterization2DRow({self.panel_width_})>"
def get_code(self) -> List[str]:
raise NotImplementedError()
class Rasterization2DColumn(Rasterization):
"""
Rasterization by Column, each column line width is panel_width
_
| | | |
| | | |
|_| |_|
"""
def __init__(self, panel_width=4) -> None:
super().__init__()
self.panel_width_ = panel_width
def __repr__(self) -> str:
return f"<Rasterization2DColumn({self.panel_width_})>"
def get_device_function(self) -> str:
return """
__device__ __inline__ dim3 rasterization2DColumn(const int panel_width) {
const auto baseBlockIdx = blockIdx.x + gridDim.x *blockIdx.y;
const auto totalPanel = (gridDim.x * gridDim.y +panel_width * gridDim.x - 1) / (panel_width * gridDim.x);
const auto totalBlock = gridDim.x * gridDim.y;
const auto panelIdx = baseBlockIdx / (panel_width *gridDim.x);
const auto strideLd = panelIdx + 1 < totalPanel ?panel_width : (totalBlock - panelIdx * (panel_width *gridDim.x)) / gridDim.x;
const auto bx = (panelIdx & 1) ? gridDim.x -(baseBlockIdx - panelIdx * panel_width * gridDim.x) /strideLd - 1 : (baseBlockIdx - panelIdx * panel_width *gridDim.x) / strideLd;
const auto by = (baseBlockIdx - panelIdx * panel_width *gridDim.x) % strideLd + panelIdx * panel_width;
const auto bz = blockIdx.z;
dim3 blockIdx(bx, by, bz);
return blockIdx;
}
"""
def get_code(self, panel_width: int = None) -> List[str]:
if panel_width is None:
panel_width = self.panel_width_
return [
self.get_device_function(),
"const dim3 blockIdx = rasterization2DColumn({});\n".format(panel_width),
]
|