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Pinzhen Xu pinzhenx

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pinzhenx / memstat.py
Created February 19, 2022 08:09
How is MemAvailable calculated in Linux? Python version of the kernel calculating the memory stats
pgsize = 4 # kb
total_lowwmark = 0
total_reserved = 0
with open('/proc/zoneinfo') as zoneinfo:
for line in zoneinfo:
if 'pages free' in line:
next(zoneinfo)
low = int(next(zoneinfo).split()[1])
high = int(next(zoneinfo).split()[1])
total_lowwmark += low
@pinzhenx
pinzhenx / conv_denorm.ipynb
Last active November 5, 2021 14:01
conv_denorm.ipynb
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@pinzhenx
pinzhenx / mirror.ipynb
Last active August 16, 2021 07:17
Anatomy of mirror strategy
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@pinzhenx
pinzhenx / benchmark_conv.py
Last active December 7, 2020 06:41
import torch
import pandas as pd
def profile(m, x, nwarm=10, nrun=300):
for _ in range(nwarm):
m(x)
with torch.autograd.profiler.profile(True) as prof:
for _ in range(nrun):
m(x)
return getattr(prof.key_averages()[0], 'cpu_time') / 1000
@pinzhenx
pinzhenx / pyrys.md
Last active April 26, 2020 04:45
  1. A simple example of how const prop works
def foo(x):
    a = 1 + 2
    b = a + 3
    c = b + 4
    return x + c

jit_foo = torch.jit.script(foo)
@pinzhenx
pinzhenx / test_onnx.html
Created May 3, 2019 17:06
onnx sample
<html>
<script src='../dist/webml-polyfill.js'></script>
<script src='third_party/protobuf.min.js'></script>
<script src='util/base.js'></script>
<script src='util/onnx/onnx.js'></script>
<script src='util/onnx/OnnxModelUtils.js'></script>
<script src='util/onnx/OnnxModelImporter.js'></script>
<script>
(async () => {
const res = await fetch('path/to/model.onnx');