https://community.intel.com/t5/Software-Archive/Dll-load-problem/m-p/744698#M1724 Hello All,<BR /> I am currently working with Studio 2008 on an XP/Windows7 platform and all my code is in C++. My program loads an external dll named AduHid.dll. This dll is used to control a data acquisition board via a USB connection.<BR /><BR /> When I do NOT use the intel compiler, everything works as advertised, no problems. When I optimize my code using the intel compiler, about 1 time in 10, the interface with the data acq board fails. Specifically, when I try and read the state of the digital I/O port, the values always come back all 0's or all 1's. When I write to the board, the commands appear to work, so the interface 'partially' works.<BR /><BR />The file AduHid.dll is supplied by the company and I am simply linking to it. I have tried both implicitly and explicitly loading the dll in case there was a race condition going on (I gave the dll 5 full seconds to load, which is forever), but the problem persists.<BR /><BR /> To make things interesting,let me explain how the code is built/used. The code is written and compiled on a computer with a Windows XP operating system. The error ONLY occurs, when I run the code on our target computer which is running Windows 7 pro. The error does not occur when running on an XP computer.<BR /><BR />Has anyone seen a problem like this or have any idea about what's going on?<BR /><BR />Thanks <BR /><BR />Rich Mon, 26 Jul 2010 15:58:26 GMT rwulpertc2_com 2010-07-26T15:58:26Z https://community.intel.com/t5/Software-Archive/Dll-load-problem/m-p/744698#M1724 Hello All,<BR /> I am currently working with Studio 2008 on an XP/Windows7 platform and all my code is in C++. My program loads an external dll named AduHid.dll. This dll is used to control a data acquisition board via a USB connection.<BR /><BR /> When I do NOT use the intel compiler, everything works as advertised, no problems. When I optimize my code using the intel compiler, about 1 time in 10, the interface with the data acq board fails. Specifically, when I try and read the state of the digital I/O port, the values always come back all 0's or all 1's. When I write to the board, the commands appear to work, so the interface 'partially' works.<BR /><BR />The file AduHid.dll is supplied by the company and I am simply linking to it. I have tried both implicitly and explicitly loading the dll in case there was a race condition going on (I gave the dll 5 full seconds to load, which is forever), but the problem persists.<BR /><BR /> To make things interesting,let me explain how the code is built/used. The code is written and compiled on a computer with a Windows XP operating system. The error ONLY occurs, when I run the code on our target computer which is running Windows 7 pro. The error does not occur when running on an XP computer.<BR /><BR />Has anyone seen a problem like this or have any idea about what's going on?<BR /><BR />Thanks <BR /><BR />Rich Mon, 26 Jul 2010 15:58:26 GMT https://community.intel.com/t5/Software-Archive/Dll-load-problem/m-p/744698#M1724 rwulpertc2_com 2010-07-26T15:58:26Z https://community.intel.com/t5/Software-Archive/Dll-load-problem/m-p/744699#M1725 After further testing, it appears the problem is in one of the drivers in the windows 7 professional platform. Sorry to have bothered everyone.<BR /><BR /><BR />Rich Wed, 28 Jul 2010 13:29:00 GMT https://community.intel.com/t5/Software-Archive/Dll-load-problem/m-p/744699#M1725 rwulpertc2_com 2010-07-28T13:29:00Z