Here's how I've got my app_info set up for a radeon 5850. This still may not stress your 7950 100%, so some further modifications may be needed. Please note, youll need to have run the Lunatics optimizer prior to using this file.
<app_info>
<app>
<name>setiathome_enhanced</name>
</app>
<file_info>
<name>AK_v8b2_win_x64_SSE41.exe</name>
<executable/>
</file_info>
<app_version>
<app_name>setiathome_enhanced</app_name>
<version_num>603</version_num>
<platform>windows_intelx86</platform>
<file_ref>
<file_name>AK_v8b2_win_x64_SSE41.exe</file_name>
<main_program/>
</file_ref>
</app_version>
<app_version>
<app_name>setiathome_enhanced</app_name>
<version_num>603</version_num>
<platform>windows_x86_64</platform>
<file_ref>
<file_name>AK_v8b2_win_x64_SSE41.exe</file_name>
<main_program/>
</file_ref>
</app_version>
<app>
<name>astropulse_v505</name>
</app>
<file_info>
<name>ap_5.06_win_x86_SSE2_OpenCL_ATI_r521.exe</name>
<executable/>
</file_info>
<file_info>
<name>AstroPulse_Kernels_r521.cl</name>
<executable/>
</file_info>
<app_version>
<app_name>astropulse_v505</app_name>
<version_num>506</version_num>
<avg_ncpus>0.04</avg_ncpus>
<max_ncpus>0.2</max_ncpus>
<platform>windows_intelx86</platform>
<plan_class>ati13ati</plan_class>
<cmdline>-instances_per_device 2 -unroll 12 -ffa_block 8192 -ffa_block_fetch 4096</cmdline>
<coproc>
<type>ATI</type>
<count>0.5</count>
</coproc>
<file_ref>
<file_name>ap_5.06_win_x86_SSE2_OpenCL_ATI_r521.ex e</file_name>
<main_program/>
</file_ref>
<file_ref>
<file_name>AstroPulse_Kernels_r521.cl</file_name>
<copy_file/>
</file_ref>
</app_version>
<app_version>
<app_name>astropulse_v505</app_name>
<version_num>505</version_num>
<avg_ncpus>0.04</avg_ncpus>
<max_ncpus>0.2</max_ncpus>
<platform>windows_intelx86</platform>
<plan_class>ati13ati</plan_class>
<cmdline>-instances_per_device 2 -unroll 12 -ffa_block 8192 -ffa_block_fetch 4096</cmdline>
<coproc>
<type>ATI</type>
<count>0.5</count>
</coproc>
<file_ref>
<file_name>ap_5.06_win_x86_SSE2_OpenCL_ATI_r521.ex e</file_name>
<main_program/>
</file_ref>
<file_ref>
<file_name>AstroPulse_Kernels_r521.cl</file_name>
<copy_file/>
</file_ref>
</app_version>
<app_version>
<app_name>astropulse_v505</app_name>
<version_num>506</version_num>
<avg_ncpus>0.04</avg_ncpus>
<max_ncpus>0.2</max_ncpus>
<platform>windows_x86_64</platform>
<plan_class>ati13ati</plan_class>
<cmdline>-instances_per_device 2 -unroll 12 -ffa_block 8192 -ffa_block_fetch 4096</cmdline>
<coproc>
<type>ATI</type>
<count>0.5</count>
</coproc>
<file_ref>
<file_name>ap_5.06_win_x86_SSE2_OpenCL_ATI_r521.ex e</file_name>
<main_program/>
</file_ref>
<file_ref>
<file_name>AstroPulse_Kernels_r521.cl</file_name>
<copy_file/>
</file_ref>
</app_version>
<app_version>
<app_name>astropulse_v505</app_name>
<version_num>505</version_num>
<avg_ncpus>0.04</avg_ncpus>
<max_ncpus>0.2</max_ncpus>
<platform>windows_x86_64</platform>
<plan_class>ati13ati</plan_class>
<cmdline>-instances_per_device 2 -unroll 12 -ffa_block 8192 -ffa_block_fetch 4096</cmdline>
<coproc>
<type>ATI</type>
<count>0.5</count>
</coproc>
<file_ref>
<file_name>ap_5.06_win_x86_SSE2_OpenCL_ATI_r521.ex e</file_name>
<main_program/>
</file_ref>
<file_ref>
<file_name>AstroPulse_Kernels_r521.cl</file_name>
<copy_file/>
</file_ref>
</app_version>
<app>
<name>astropulse_v505</name>
</app>
<file_info>
<name>ap_5.05r409_SSE.exe</name>
<executable/>
</file_info>
<app_version>
<app_name>astropulse_v505</app_name>
<version_num>505</version_num>
<platform>windows_intelx86</platform>
<file_ref>
<file_name>ap_5.05r409_SSE.exe</file_name>
<main_program/>
</file_ref>
</app_version>
<app_version>
<app_name>astropulse_v505</app_name>
<version_num>505</version_num>
<platform>windows_x86_64</platform>
<file_ref>
<file_name>ap_5.05r409_SSE.exe</file_name>
<main_program/>
</file_ref>
</app_version>
<app>
<name>setiathome_enhanced</name>
</app>
<file_info>
<name>MB6_win_x86_SSE3_OpenCL_ATi_HD5_r390.exe</name>
<executable/>
</file_info>
<file_info>
<name>MultiBeam_Kernels_r390.cl</name>
<executable/>
</file_info>
<app_version>
<app_name>setiathome_enhanced</app_name>
<version_num>610</version_num>
<platform>windows_intelx86</platform>
<avg_ncpus>0.05</avg_ncpus>
<max_ncpus>0.05</max_ncpus>
<plan_class>ati13ati</plan_class>
<cmdline>-period_iterations_num 20 -instances_per_device 2</cmdline>
<coproc>
<type>ATI</type>
<count>0.5</count>
</coproc>
<file_ref>
<file_name>MB6_win_x86_SSE3_OpenCL_ATi_HD5_r390.ex e</file_name>
<main_program/>
</file_ref>
<file_ref>
<file_name>MultiBeam_Kernels_r390.cl</file_name>
<copy_file/>
</file_ref>
</app_version>
<app_version>
<app_name>setiathome_enhanced</app_name>
<version_num>610</version_num>
<platform>windows_x86_64</platform>
<avg_ncpus>0.05</avg_ncpus>
<max_ncpus>0.05</max_ncpus>
<plan_class>ati13ati</plan_class>
<cmdline>-period_iterations_num 20 -instances_per_device 2</cmdline>
<coproc>
<type>ATI</type>
<count>0.5</count>
</coproc>
<file_ref>
<file_name>MB6_win_x86_SSE3_OpenCL_ATi_HD5_r390.ex e</file_name>
<main_program/>
</file_ref>
<file_ref>
<file_name>MultiBeam_Kernels_r390.cl</file_name>
<copy_file/>
</file_ref>
</app_version>
</app_info>