deepseek-ai/DeepGEMM
DeepGEMM: clean and efficient BLAS kernel library on GPU
GitHub 
25K
lines of main code
128 files
3.6K
lines of test code
15 files
0.8K
lines of other code
12 files
2y
age
588 days
100%
main code touched
1 year (25K LOC)
14K
cuh
8.2K
hpp
2.1K
py
0.03K
cpp
0.03K
cu
30 days 2026 2025
+13K
-5.7K
+30K
-10K
+11K
-1.5K
160

363

164

3

13

28

0

0

1

2

6

12

2026 2025
Rule-of-thumb estimates

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rebuild value

Maintenance effort

per year to maintain
maintenance cost per year
Rules of thumb, not measurements: one man-year rebuilds about 10,000 lines of main code (design, testing and coordination included), and keeping a code base alive takes about 15% of its rebuild value per year (20 man-years of rebuild value need about 3 man-years of maintenance every year). Your changes are remembered in this browser for every report.