ALERT: THE COLLECTION IS OFFLINE BECAUSE OF 100x HIGHER DOWNLOADS THAN NORMAL. The website is up but the matrix files are not accessible. THE PROBLEM IS EXCESSIVE DOWNLOADS FROM JOBS RUNNING ON AWS ITSELF, POUNDING THE DATA. We have no estimate on when this will be resolved, but it will take some time (weeks perhaps?). Please do not contact us to ask when it will be up; the answer will be the same as this alert box. If you are running these AWS workloads, please revise them. All interfaces we provide (Python, MATLAB, Java gui) download a matrix ONCE and then cache it locally. Do the same or use these interfaces.

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Matrix ID
Year
Displaying collection matrices 1 - 20 of 2904 in total
Id Name Group Rows Cols Nonzeros Kind Date Download File
274 will57 HB 57 57 281 Semiconductor Device Problem 1970 MATLAB Rutherford Boeing Matrix Market
1462 EAT_SR Pajek 23,219 23,219 325,589 Directed Weighted Graph 1971 MATLAB Rutherford Boeing Matrix Market
109 curtis54 HB 54 54 291 2D/3D Problem 1971 MATLAB Rutherford Boeing Matrix Market
168 ibm32 HB 32 32 126 Directed Graph 1971 MATLAB Rutherford Boeing Matrix Market
1461 EAT_RS Pajek 23,219 23,219 325,592 Directed Weighted Graph 1971 MATLAB Rutherford Boeing Matrix Market
158 gent113 HB 113 113 655 Statistical/Mathematical Problem 1973 MATLAB Rutherford Boeing Matrix Market
140 eris1176 HB 1,176 1,176 18,552 Power Network Problem 1973 MATLAB Rutherford Boeing Matrix Market
11 ash85 HB 85 85 523 Least Squares Problem 1974 MATLAB Rutherford Boeing Matrix Market
8 ash292 HB 292 292 2,208 Least Squares Problem 1974 MATLAB Rutherford Boeing Matrix Market
12 ash958 HB 958 292 1,916 Least Squares Problem 1974 MATLAB Rutherford Boeing Matrix Market
5 abb313 HB 313 176 1,557 Least Squares Problem 1974 MATLAB Rutherford Boeing Matrix Market
10 ash608 HB 608 188 1,216 Least Squares Problem 1974 MATLAB Rutherford Boeing Matrix Market
7 ash219 HB 219 85 438 Least Squares Problem 1974 MATLAB Rutherford Boeing Matrix Market
6 arc130 HB 130 130 1,037 Materials Problem 1974 MATLAB Rutherford Boeing Matrix Market
206 lund_a HB 147 147 2,449 Structural Problem 1974 MATLAB Rutherford Boeing Matrix Market
9 ash331 HB 331 104 662 Least Squares Problem 1974 MATLAB Rutherford Boeing Matrix Market
207 lund_b HB 147 147 2,441 Structural Problem 1974 MATLAB Rutherford Boeing Matrix Market
229 plat362 HB 362 362 5,786 2D/3D Problem 1975 MATLAB Rutherford Boeing Matrix Market
228 plat1919 HB 1,919 1,919 32,399 2D/3D Problem 1975 MATLAB Rutherford Boeing Matrix Market
230 plsk1919 HB 1,919 1,919 9,662 2D/3D Problem 1975 MATLAB Rutherford Boeing Matrix Market