In OpenCL 1.1 my call to function min() is ambiguous and I can't figure out why -

-

i upgraded opencl 1.0 1.1. when make call min() function, error output:

    <program source>:45:44: error: call 'min' ambiguous             int nframesthiskernelingests = min(nframestoingest  - navg*npp*get_global_id(2), navg*npp);  <built-in>:3569:27: note: candidate function double16 __overloadable__ min(double16, double16);                                                                           ^ <built-in>:3568:26: note: candidate function double8 __overloadable__ min(double8, double8);

the error output continues more lines different types.

when tried isolate problem, get_global_id(2) appears problem. thought casting get_global_id(2) int uint (i believe returns uint) solve problem doesn't. know going on? looked @ 1.0 , 1.1 specs , still confused why happening.

the opencl 1.0 , 1.1 specifications define min have following function signatures:

gentype min (gentype x, gentype y)  gentype min (gentype x, sgentype y)

as such, argument types must same, or 1 vector , scalar matching vector element type e.g.

int4 a,b; int c;  min(a,b); // arguments have same type min(a,c); // 2nd element may scalar, matching            // element type of 1st argument ( vector type )

note return type of get_global_id size_t, may 32 or 64bits in size.

you have cast expression results select specific overload of min.

there many overloads of min (as compiler error message unhelpfully indicating) e.g.

min(float  a, float  b); min(float2 a, float2 b); min(float2 a, float  b); min(float3 a, float3 b); min(float3 a, float  b); min(float4 a, float4 b); ... // , vector sizes 4,8,16 min(double a, double b); // opencl 64bit floating point extension enabled min(double2 a, double b); // opencl 64bit floating point extension enabled ... // , integral scalar , vector types (char, schar, short, ushort, int, etc)  ...

Comments

Post a Comment

Popular posts from this blog

ASP.NET/SQL find the element ID and update database -

-
basically i've got update query runs when click submit button. i have asp:repeater in page layer inside this <asp:repeater id="dgbookings" runat="server" onitemdatabound="itemdb"> <itemtemplate> <div class="bookingscontent"> <div class="bookingdetails" id="<%# databinder.eval(container.dataitem, "booking_ref") %>"> <p class="infotext"><%# databinder.eval(container.dataitem, "adults") %> <asp:linkbutton onclick="editdetails" text="edit..." runat="server"></asp:linkbutton></p> <p class="infotext"><asp:linkbutton onclick="submitdetails" text="submit..." runat="server"></asp:linkbutton></p> </div> </div> </itemtemplate> <asp:repeater> and outputs ...
Read more

jquery - appear modal windows bottom -

-
i have modal windows in application, work fine <div id="modal" class="modal hide fade" tabindex="-1" role="dialog" aria-labelledby="mymodallabel" aria-hidden="true"> but when modal appears, appear top of windows, , want appear bottom the application joomla 3.0! , using template of meet gavern any idea? i found solution i modified de css in bootstrap .modal.fade { top:-25%; -webkit-transition:opacity .3s linear, bottom .3s ease-out; -moz-transition:opacity .3s linear, bottom .3s ease-out; -ms-transition:opacity .3s linear, bottom .3s ease-out; -o-transition:opacity .3s linear, bottom .3s ease-out; transition:opacity .3s linear, bottom .3s ease-out; }
Read more

c++ - Compiling static TagLib 1.6.3 libraries for Windows -

-
i having super hard time compiling , using taglib 1.6.3 in qt project. i've tried can think of. taglib claims supported through cmake i'm not having luck. furthermore, i'm confused kinds of files need qt libs! i've built *.a files, *.lib, , *.dll. understand far... believe since i'm working in windows *.lib want. no matter do, end "undefined references" taglib functions try use when try compile qt project. have tried mingw32, msys, visual studio 2008, , cross-compiling windows on linux. turning nothing. what makes less sense me if compile same taglib source qt on mac (g++ think?) works fine! somewhere in windows compilation procedures have going wrong. have been smacking face on desk 30 (on , off) hours trying figure out. since qt uses mingw must compile taglib same compiler? if compile *.lib's visual studio not compatible? are *.a libraries usable in windows? (assuming mingw) i'm still trying handle on c++ stuff, after reading coun...
Read more