Dear Toon and Kresimir We are about to prepare the first release of our ALPS applications package for quantum lattice models (http://alps.comp-phys.org/). Some...
I am currently working with a lot (~ 20) of matrices wich are relatively big (~ 2250x2250) because of the number of matrices, I must use sparse or compressed...
For me, axpy_prod was the solution to a similar problem with many compressed_matrix*vector products - orders of magnitude in speed, and also the expected O(N)...
I tried figuring this out by searching these forums but couldn't figure it out. I am new to this, so not much knowledge regarding all of this yet. Anyways, I...
1398
Gunter Winkler
guwi17@...
Mar 3, 2004 10:27 am
... The syntax of axpy_prod is: #include "operation.hpp" axpy_prod( A, X, Y, clear); which computes: if (clear) { Y = A * X; } else { Y += A * X; } axpy_prod...
Thanks, that solved my problem, I went from 224 seconds(prec_prod) to 9 seconds(axpy_prod). Not to be rude or anything (your are all doing great work on...
Dear All, I have committed a change to the Iterator Concepts documentation that fixes up the discrepancy between the documentation and the code/intent. This...
Hi, Im currently using ublas as part of a software library im writing. The trouble is, whenever i pass a matrix, by reference or a pointer, from an executable...
Salut, ... At least at the times I was programming in windows (~3years ago) this was a limitation of Windows, at least I didn't find a way to realloc memory in...
... Sounds like the problem to me. The problem is how you are compiling and linking and not exclusive to uBLAS. You can test this by simply allocating some...
Hi all, I am using uBlas inside a DLL. But it seems to depend really on the type of dll. I am using uBlas in pure C++ Code which is wrappred later with managed...
Salut, ... I don't know about VS 7, I stopped MS at VS 6. But you don't have too look for errors, it will just core-dump or SIGSEGV or something or something...
First of all I apologize for posting my previous question here. I didn't realize it was actually a DEV forum :) Secondly, thanks to someone who emailed me...
... Well, this is *mainly* dev forum, but user's questions are welcomed, too -- AFAIK there is no uBLAS users forum. So, feel free to ask your questions here. ...
Hello Eelco, ... I think your post was in the right place. ... I think here it is getting interessting. Which parts did you really use, did you used...
Hi Matt, I was thinking of working with icc (linux version) 8.0 as well. ... The code is significantly different. What problem the compiler has I don't know! ...
Hi Michael, The intel v8.0 compilers #define __GNUC__, __GNUC_MINOR__, and __GNUC_PATCHLEVEL__. I have found that this seems to break some metaprogramming and...
Hi, could you please explain the different sparse matrix/vector types? I would like to know How big are they in memory? What are the timings for different...
VC7.1 gives some warnings for the current cvs ublas: vector_assign lines 82 and 471 "conversion from difference_type to const int" this calls line 1524 in...
The previous cvs version of inner_prod was wrong due to my false advice. I tried again and hopefully this time the algorithm works. The innerprod algorithm...
Hi, ... Hm, unsure. GCC and ICC accept this code. I suspect that ... std::max(difference_type(1), compare) ... could be a workaround. ... Oops. Fixed in CVS. ...
... and "std::ptrdiff_t". ... The problem is solved by this elegant line: ... std::max(1, static_cast<const difference_type&>;(- compare))); This looks like a...
Dear All, I have been working through the issues due to the recent Boost wide (in Boost CVS) introduction of std_min and std_max. These work around some...
Hi David, ... You're welcome. ... It is. Although its name is `ublas-dev', it is for ublas users, too. And, owing to the Joerg's hospitality, for bindings...
hi all. I've been using the coordinate_matrix class from uBlas with Visual C++ 7.0 (BOOST_MSCV = 1300) and, in particular, the member function sort (). I...
