This is my first post on this fine forum.
Could anybody help with details on how to access a look-up table in PTX? The Nvidia documentation (PTX ISA 2.1) is definitely lacking in this area.
I am using the API driver mode.
The declaration and initialization works fine. I declare the table as follows:
.extern .const .f32 Table;
For accessing the elements I tried the following but it does not compile. Register %r1 holds the index of the desired element.
ld.const.f32 %Value, [Table+%r1];
The JIT compiler gives the following error: “Parsing error near ‘%r1’: syntax error”. I am surprised because I expected Table to be a constant address, most likely 0, so it should be treated by the PTX compiler as a constant offset.
A constant offset will work though.
ld.const.f32 %Value, [Table+4];
Any help is much appreciated.