Download VIS Instruction Set User`s Manual

VIS Instruction Set User’s Manual
3.2 Development Process Overview
Code written using the VIS instruction set may be compiled and run in three
ways:
1.
Compile your VIS code using the SPARCompiler 4.x directly to generate
object code for execution on the UltraSPARC CPU.
2.
Compile your VIS code using any compatible, not necessarily a
SPARCompiler 4.x, C compiler and link with “libvis_sim.so” or “libvis_
sim.a”, a VIS instruction simulator, to resolve VIS function calls. The VIS
instruction simulator substitutes standard C implementations for the VIS
instruction set which permits you to run your code on any compatible
processor, not necessarily an UltraSPARC-I, to perform debugging and
algorithm validation.
3.
Compile and specially process your VIS code to run on INCAS (It’s a
Nearly Cycle Accurate Simulator), which is a nearly cycle accurate model
of the UltraSPARC-I processor. This permits you to do independent code
performance prediction, cycle counting and debugging.
3.3 VIS Software Developer’s Kit
The VIS Software Developer’s Kit (VSDK) is a set of tools and sample code designed to help in the development of VIS code. A bulk of the sample code in this
and later chapters of this guide can be found in the VSDK. Before using the
VSDK, the following environment variables must be defined:
VSDKHOME - the root directory of the VIS Software Developers Kit
INCASHOME - the root directory of INCAS
If the SPARCompiler 4.x being used to compile VIS code is not the default compiler, then the environment variable, CC, needs to be set to point to the SC 4.x
compiler, in order for the Makefiles in the VSDK to work.
An example environment variable definition is:
% setenv VSDKHOME /opt/SUNWvsdk
% setenv INCASHOME /opt/SUNWincas
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