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
1 1138_bus HB 1,138 1,138 4,054 Power Network Problem 1985 MATLAB Rutherford Boeing Matrix Market
2 494_bus HB 494 494 1,666 Power Network Problem 1985 MATLAB Rutherford Boeing Matrix Market
3 662_bus HB 662 662 2,474 Power Network Problem 1985 MATLAB Rutherford Boeing Matrix Market
4 685_bus HB 685 685 3,249 Power Network Problem 1985 MATLAB Rutherford Boeing Matrix Market
5 abb313 HB 313 176 1,557 Least Squares Problem 1974 MATLAB Rutherford Boeing Matrix Market
6 arc130 HB 130 130 1,037 Materials Problem 1974 MATLAB Rutherford Boeing Matrix Market
7 ash219 HB 219 85 438 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
9 ash331 HB 331 104 662 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
11 ash85 HB 85 85 523 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
13 bcspwr01 HB 39 39 131 Power Network Problem 1981 MATLAB Rutherford Boeing Matrix Market
14 bcspwr02 HB 49 49 167 Power Network Problem 1981 MATLAB Rutherford Boeing Matrix Market
15 bcspwr03 HB 118 118 476 Power Network Problem 1981 MATLAB Rutherford Boeing Matrix Market
16 bcspwr04 HB 274 274 1,612 Power Network Problem 1981 MATLAB Rutherford Boeing Matrix Market
17 bcspwr05 HB 443 443 1,623 Power Network Problem 1981 MATLAB Rutherford Boeing Matrix Market
18 bcspwr06 HB 1,454 1,454 5,300 Power Network Problem 1981 MATLAB Rutherford Boeing Matrix Market
19 bcspwr07 HB 1,612 1,612 5,824 Power Network Problem 1981 MATLAB Rutherford Boeing Matrix Market
20 bcspwr08 HB 1,624 1,624 6,050 Power Network Problem 1981 MATLAB Rutherford Boeing Matrix Market