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<p> <font size="4"> </font><b><font size="4">Is it possible to substitute "double" by a 128 bit floating point class in CLP?</font></b> <br>
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I really admire how CLP can solve 50000 variable linear systems having just 15 decimal digits available (my own "brute force" simplex can not handle a system with more than 300 variables with the standard 64-bit double type). <br>
But when it comes to 600,000 variables, handling it with just 15 decimal digits, I think, becomes impossible... I tried different combinations of tolerances in both primal and dual simplex of CLP but always got a segmentation fault after 24-48 hours. <br>
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If someone knows the answer, please let me know... If it is not implemented, I would volunteer to write a 128 bit floating point class (unless it already exists in COIN).... Of course it will be much slower than "double" but for someone who really needs a solution of a large problem and has a lot of patience this would help....<br>
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- Alexey<br>
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Dr. Alexey Lvov<br>
IBM T.J. Watson Research Institute<br>
1101 Kitchawan Rd. (Rt. 134) Office 34-159<br>
Yorktown Heights NY 10598<br>
Tel: (914)-945-3732<br>
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