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docs/build.sh runs rst2html rather than rst2html.py

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Explicitly documented that fact that ICC needs the -mmic flag to compile for KNC.
Updated ISPC User Guide with details on ICC compiler options that impact FP performance in generated code.
This commit is contained in:
Jean-Luc Duprat
2012-07-30 11:47:25 -07:00
parent 0bb4d282e2
commit 63ed90b0fd
2 changed files with 16 additions and 3 deletions
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6
docs/build.sh
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@@ -1,14 +1,14 @@
#!/bin/bash #!/bin/bash
for i in ispc perfguide faq; do for i in ispc perfguide faq; do
rst2html.py --template=template.txt --link-stylesheet \ rst2html --template=template.txt --link-stylesheet \
--stylesheet-path=css/style.css $i.rst > $i.html --stylesheet-path=css/style.css $i.rst > $i.html
done done
rst2html.py --template=template-news.txt --link-stylesheet \ rst2html --template=template-news.txt --link-stylesheet \
--stylesheet-path=css/style.css news.rst > news.html --stylesheet-path=css/style.css news.rst > news.html
rst2html.py --template=template-perf.txt --link-stylesheet \ rst2html --template=template-perf.txt --link-stylesheet \
--stylesheet-path=css/style.css perf.rst > perf.html --stylesheet-path=css/style.css perf.rst > perf.html
#rst2latex --section-numbering --documentclass=article --documentoptions=DIV=9,10pt,letterpaper ispc.txt > ispc.tex #rst2latex --section-numbering --documentclass=article --documentoptions=DIV=9,10pt,letterpaper ispc.txt > ispc.tex

13
docs/ispc.rst
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@@ -582,6 +582,10 @@ code generated by ``ispc``, setting the ``#include`` search path so that it
can find the ``examples/intrinsics/knc.h`` header file in the ``ispc`` can find the ``examples/intrinsics/knc.h`` header file in the ``ispc``
distribution. distribution.
::
icc -mmic -Iexamples/intrinsics/ foo.cpp -o foo.o
With the current beta implementation, complex ``ispc`` programs are able to With the current beta implementation, complex ``ispc`` programs are able to
run on Xeon Phi, though there are a number of known limitations: run on Xeon Phi, though there are a number of known limitations:
@@ -600,6 +604,15 @@ run on Xeon Phi, though there are a number of known limitations:
where the memory address is actually aligned. This may unnecessarily where the memory address is actually aligned. This may unnecessarily
impact performance. impact performance.
* When requesting that ICC generate code with strict floating point
precision compliance (using ICC option ``-fp-model strict``) or
using of floating point exceptions (using ICC option ``-fp-model
except``) the compiler will generate code that uses the x87 unit
rather than KNC's vector unit. For similar reasons, the options
``–ansi`` and ``–fmath-errno`` may result in calls to math functions
that are implemented in x87 rather than KNC instructions. This will
have a significant performance impact.
All of these issues are currently actively being addressed and will be All of these issues are currently actively being addressed and will be
fixed in future releases. fixed in future releases.