hi all! I thought I had already post an answer to my own question... Aleksey Gurtovoy's hint ... Adding BOOST_TT_BROKEN_COMPILER_SPEC(value_t) after the...
Greetings! Has anyone investigated the use of the uBLAS with parallel communications libraries such as MPI? MPI in particular would present a challenge in...
Hello all, I just saw in the FAQ on the page http://www.boost.org/libs/numeric/ublas/doc/index.htm this point here: Q: I've written some uBLAS benchmarks to...
Hi all, From the docs for vector_proxy, a precondition for a vector_slice is s.start() + s.stride() * s.size() <= data.size() This means that for s.stride() >...
Ian McCulloch
ianmcc@...
Apr 5, 2004 12:28 pm
1455
i can 't build boost i wait for your help!!! Yahoo! Mail : votre e-mail personnel et gratuit qui vous suit partout ! Créez votre Yahoo! Mail sur...
who has used ublas to calculate eigenvals and eigenvectors of matrix(n,m)? can you send me this code? thanks for your help!! Yahoo! Mail : votre e-mail...
Hello, A newbie question: Has anyone tried to use a fixed point type with uBLAS. Is it necessary to create new traits or can it be dealt with automatically. ...
Hi Ian, Thanks for the info. ... Hmm... ... This is bad. ... I don't think is so complex as this. a) Strides have been designed so their interface is exactly...
Hello M.P, Sounds like quite an advanced newbie question! ... No sure! ... You will need definitely need to add traits. As part of this you will need to think...
Hi, Continuing the theme of 'fixing' things that already work ;) I've been looking at promote_traits in uBLAS. In some cases, the result of an expression using...
Ian McCulloch
ianmcc@...
Apr 9, 2004 8:52 pm
1461
Hi, I tried this on my Athlon64. On Athlon64, int is 32 bit and long is 64 bit. Results below. ... promote_example.cpp -o promote_example ... builtin...
Hi Ian, Hi all, I've looked into this a bit further. That is I have actually looked at the current uBLAS code! uBLAS (CVS and from Boost_1_31_0) implements a...
Hi Joerg, Hi All, While looking at the vector_slice stuff I was looking at the current implementation of slice. Slice iterators are currently implemented by...
Hi again Ian, ... I have also been looking at precisely the same thing! ... builtin.. ... This seems a rather radical solution! ... I recently tested using...
Hi Michael, ... How useful is a zero stride? I would be concerned that even if a multiply is the same speed as an addition, it would still inhibit the...
Ian McCulloch
ianmcc@...
Apr 11, 2004 5:53 pm
1466
Dear All, Are there any algorithms for ublas for solving eigenproblems, lu-factorization etc? br Thorsten...
Are there any pseudo algorithme for resolving QR decomposition of any matrix. thanks Yahoo! Mail : votre e-mail personnel et gratuit qui vous suit partout ! ...
... lu-factorisation is in lu.hpp. Also, there is a bindings library (not complete, but IMHO usable) which provides interfaces to ATLAS, LAPACK and UMFPACK....
... thanks. ... thanks. Good pointers. This will solve my initial problems. I was wondering if people had consider to implement *generic* matrix algorithms...
... BLAS libraries are typically highly tuned -- and need to be, since performance depends sensitively upon how computations take advantage of spatial and...
Hi Joerg, I have implemented and tested a change to the uBLAS return type deduction mechanism. The new code uses the 'type_deduction.hpp' I mentioned earlier. ...
... [snip] ... It should be possible to tune generic code for diffferent architectures; I think MTL does that. ... Well, for C++ users it might be easier to...
Hello, ... [snip] ... Intel Pentuim 4: VC 7.1 (if the compiler may be of interest I can test another one as well, but it seems to be a platform thing) builtin...
... No, it depends only on the sizes and representation of the builtin integer types. For sizeof(long) > sizeof(int) (most 64-bit machines), uBLAS agrees with...
Ian McCulloch
ianmcc@...
Apr 13, 2004 2:50 pm
1475
... Impressive! There may be one corner case though: on a machine where sizeof(int) == sizeof(long), the result of long + unsigned is unsigned long and I can't...
Ian McCulloch
ianmcc@...
Apr 13, 2004 4:59 pm
1476
Hi Ian, ... Good point. Actually Joel's current version didn't have all the builtin type detected. I have just augmented it with short and long. The clever bit...
We are using the expression template mechanism in both debug and release builds. The boost/numeric/ublas/config.hpp however defines BOOST_UBLAS_USE_ET only for...
Hi Toon, ... Sounds good. I think there are a couple of similar cases where config.hpp choose defaults without regard to the previous setting. In this regard...
Hi, first, sorry for my previous misposting (no message body). I'd like to know, if there is any possibility to create a matrix/vector, which uses an already...
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