NVIDIA vs AMD video card on new desktop build?

Alain De Vos said:
You only need cuda for a specific kind of applications. In general it's not needed.
Click to expand...
I'm aware of that. Using the GPU for number crunching is a feature I need to have working...

@cracauer I would prefer that it work natively and not be bogged down in emulation layers that could kill performance.
 
Linuxulator (the code that runs on the CPU) has no impact on the shader (the stuff that the GPU executes) performance. That said, I've been running hashcat on Nvidia (in OpenCL mode) without it, so there are some options out there.
 
shkhln said:
Linuxulator (the code that runs on the CPU) has no impact on the shader (the stuff that the GPU executes) performance. That said, I've been running hashcat on Nvidia (in OpenCL mode) without it, so there are some options out there.
Click to expand...
Gotcha...original intent of my post though was to describe my effort to get the AMD card working as well as the nvidia card so I could take advantage of the AMD GPU processing (which is suppose to be possible in an open source way), but the performance of the AMD drivers cannot compete with the nvidia closed source ones (at least under linux). My openGL benchmarking showed such dismal AMD performance though, that I'm not convinced it is worth the effort to evne attempt any GPU computational throughput comparisons.
 
bsduck said:
DVI is a hybrid digital+analog connector and can carry both a digital and an analog signal at the same time, or only a digital signal, or only an analog signal (this last case is unlikely nowadays). It's possible that your GPU in its default configuration on FreeBSD only outputs a digital signal, which is why your DVI to VGA adapter doesn't work. In this case, either find a configuration setting that will make the GPU output an analog signal, or use a DVI to HDMI adapter which should work without issues.
Click to expand...
I found that i must get an Active adapter i have found one.
 
I'm having trouble deciding between the RTX 3070 TI and the RX 6800 XT. Both cards will pair well with my used system I plan to purchase but I don't know how each card will work on FreeBSD. Could anyone offer their experiences? My biggest concern is with screen tearing. I use Wayfire or LXQT with picom on some systems to try and prevent tearing however I do have an Nvidia card that has been rather difficult to prevent tearing. I just don't want to run into that issue if I go with an Nvidia GPU.
 
LibreQuest said:
I'm having trouble deciding between the RTX 3070 TI and the RX 6800 XT. Both cards will pair well with my used system I plan to purchase but I don't know how each card will work on FreeBSD. Could anyone offer their experiences? My biggest concern is with screen tearing. I use Wayfire or LXQT with picom on some systems to try and prevent tearing however I do have an Nvidia card that has been rather difficult to prevent tearing. I just don't want to run into that issue if I go with an Nvidia GPU.
Click to expand...


Use sienna_cichlid driver for the RX 6800 XT.

My thread should help here: Thread sienna_cichlid-driver.86670. Yeah, my GPU is RX 6900 XT, but the same instructions apply to your RX 6800 XT, as well.
 
I have RX 6600 which works fine on FreeBSD 14. But I did not find how to enable OpenCL. Is it supported at all with this card?
 
Does it mean OpenCL is not supported?

Code: 
$ clinfo
Number of platforms                               2
  Platform Name                                   Clover
  Platform Vendor                                 Mesa
  Platform Version                                OpenCL 1.1 Mesa 24.1.0-devel (git-305256e3440)
  Platform Profile                                FULL_PROFILE
  Platform Extensions                             cl_khr_icd
  Platform Extensions function suffix             MESA

  Platform Name                                   rusticl
  Platform Vendor                                 Mesa/X.org
  Platform Version                                OpenCL 3.0 
  Platform Profile                                FULL_PROFILE
  Platform Extensions                             cl_khr_byte_addressable_store cl_khr_create_command_queue cl_khr_expect_assume cl_khr_extended_versioning cl_khr_icd cl_khr_il_program cl_khr_spirv_no_integer_wrap_decoration
  Platform Extensions with Version                cl_khr_byte_addressable_store                                    0x400000 (1.0.0)
                                                  cl_khr_create_command_queue                                      0x400000 (1.0.0)
                                                  cl_khr_expect_assume                                             0x400000 (1.0.0)
                                                  cl_khr_extended_versioning                                       0x400000 (1.0.0)
                                                  cl_khr_icd                                                       0x400000 (1.0.0)
                                                  cl_khr_il_program                                                0x400000 (1.0.0)
                                                  cl_khr_spirv_no_integer_wrap_decoration                          0x400000 (1.0.0)
  Platform Numeric Version                        0xc00000 (3.0.0)
  Platform Extensions function suffix             MESA
  Platform Host timer resolution                  1ns

  Platform Name                                   Clover
Number of devices                                 1
  Device Name                                     AMD Radeon RX 6600 (radeonsi, navi23, LLVM 15.0.7, DRM 3.42, 14.0-RELEASE-p3)
  Device Vendor                                   AMD
  Device Vendor ID                                0x1002
  Device Version                                  OpenCL 1.1 Mesa 24.1.0-devel (git-305256e3440)
  Device Numeric Version                          0x401000 (1.1.0)
  Driver Version                                  24.1.0-devel
  Device OpenCL C Version                         OpenCL C 1.1 
  Device OpenCL C Numeric Version                 0x401000 (1.1.0)
  Device Type                                     GPU
  Device Profile                                  FULL_PROFILE
  Device Available                                Yes
  Compiler Available                              Yes
  Max compute units                               28
  Max clock frequency                             2750MHz
  Max work item dimensions                        3
  Max work item sizes                             256x256x256
  Max work group size                             256
=== CL_PROGRAM_BUILD_LOG ===
fatal error: cannot open file '/usr/local/share/clc/gfx1032-amdgcn-mesa-mesa3d.bc': No such file or directory
  Preferred work group size multiple (kernel)     <getWGsizes:1980: create kernel : error -46>
  Preferred / native vector sizes                 
    char                                                16 / 16      
    short                                                8 / 8       
    int                                                  4 / 4       
    long                                                 2 / 2       
    half                                                 0 / 0        (n/a)
    float                                                4 / 4       
    double                                               2 / 2        (cl_khr_fp64)
  Half-precision Floating-point support           (n/a)
  Single-precision Floating-point support         (core)
    Denormals                                     No
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 No
    Round to infinity                             No
    IEEE754-2008 fused multiply-add               No
    Support is emulated in software               No
    Correctly-rounded divide and sqrt operations  No
  Double-precision Floating-point support         (cl_khr_fp64)
    Denormals                                     Yes
    Infinity and NANs                             Yes
    Round to nearest                              Yes
    Round to zero                                 Yes
    Round to infinity                             Yes
    IEEE754-2008 fused multiply-add               Yes
    Support is emulated in software               No
  Address bits                                    64, Little-Endian
  Global memory size                              8589934592 (8GiB)
  Error Correction support                        No
  Max memory allocation                           2147483648 (2GiB)
  Unified memory for Host and Device              No
  Minimum alignment for any data type             128 bytes
  Alignment of base address                       32768 bits (4096 bytes)
  Global Memory cache type                        None
  Image support                                   No
  Local memory type                               Local
  Local memory size                               65536 (64KiB)
  Max number of constant args                     16
  Max constant buffer size                        67108864 (64MiB)
  Max size of kernel argument                     1024
  Queue properties                                
    Out-of-order execution                        No
    Profiling                                     Yes
  Profiling timer resolution                      0ns
  Execution capabilities                          
    Run OpenCL kernels                            Yes
    Run native kernels                            No
    ILs with version                              SPIR-V                                                           0x400000 (1.0.0)
  Built-in kernels with version                   (n/a)
  Device Extensions                               cl_khr_byte_addressable_store cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_fp64 cl_khr_extended_versioning
  Device Extensions with Version                  cl_khr_byte_addressable_store                                    0x400000 (1.0.0)
                                                  cl_khr_global_int32_base_atomics                                 0x400000 (1.0.0)
                                                  cl_khr_global_int32_extended_atomics                             0x400000 (1.0.0)
                                                  cl_khr_local_int32_base_atomics                                  0x400000 (1.0.0)
                                                  cl_khr_local_int32_extended_atomics                              0x400000 (1.0.0)
                                                  cl_khr_int64_base_atomics                                        0x400000 (1.0.0)
                                                  cl_khr_int64_extended_atomics                                    0x400000 (1.0.0)
                                                  cl_khr_fp64                                                      0x400000 (1.0.0)
                                                  cl_khr_extended_versioning                                       0x400000 (1.0.0)

  Platform Name                                   rusticl
Number of devices                                 0

NULL platform behavior
  clGetPlatformInfo(NULL, CL_PLATFORM_NAME, ...)  Clover
  clGetDeviceIDs(NULL, CL_DEVICE_TYPE_ALL, ...)   Success [MESA]
  clCreateContext(NULL, ...) [default]            Success [MESA]
  clCreateContext(NULL, ...) [other]              <error: no devices in non-default plaforms>
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_DEFAULT)  Success (1)
    Platform Name                                 Clover
    Device Name                                   AMD Radeon RX 6600 (radeonsi, navi23, LLVM 15.0.7, DRM 3.42, 14.0-RELEASE-p3)
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CPU)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_GPU)  Success (1)
    Platform Name                                 Clover
    Device Name                                   AMD Radeon RX 6600 (radeonsi, navi23, LLVM 15.0.7, DRM 3.42, 14.0-RELEASE-p3)
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ACCELERATOR)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_CUSTOM)  No devices found in platform
  clCreateContextFromType(NULL, CL_DEVICE_TYPE_ALL)  Success (1)
    Platform Name                                 Clover
    Device Name                                   AMD Radeon RX 6600 (radeonsi, navi23, LLVM 15.0.7, DRM 3.42, 14.0-RELEASE-p3)

ICD loader properties
  ICD loader Name                                 OpenCL ICD Loader
  ICD loader Vendor                               OCL Icd free software
  ICD loader Version                              2.3.1
  ICD loader Profile                              OpenCL 3.0
Segmentation fault
 
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