If all threads in same block visit the same address i.e. array[0]
for some old compute capability, there is a bank conflict.
But does this conflict still exist for the latest compute capabilities (i.e. 7.0 for GPU V100 or 8.0 for A100)?
Is there still shared mem bank conflict in nvidia cuda compute capability 7.0 and above?
637 Views Asked by cctv At
1
There are 1 best solutions below
Related Questions in CUDA
- CUDA matrix inversion
- How can I do a successful map when the number of elements to be mapped is not consistent in Thrust C++
- Subtraction and multiplication of an array with compute-bound in CUDA kernel
- Is there a way to profile a CUDA kernel from another CUDA kernel
- Cuda reduce kernel result off by 2
- CUDA is compatible with gtx 1660ti laptop GPU?
- How can I delete a process in CUDA?
- Use Nvidia as DMA devices is possible?
- How to runtime detect when CUDA-aware MPI will transmit through RAM?
- How to tell CMake to compile all cpp files as CUDA sources
- Bank Conflict Issue in CUDA Shared Memory Access
- NVIDIA-SMI 550.54.15 with CUDA Version: 12.4
- Using CUDA with an intel gpu
- What are the limits on CUDA printf arguments?
- Why do CUDA asynchronous errors occur? （occur on the linux OS）
Related Questions in NVIDIA
- Windows 10 TensorFlow cannot detect Nvidia GPU
- Rootless Docker OCI: error modifying OCI spec: failed to inject CDI devices: unresolvable CDI devices nvidia.com/gpu=all: unknown
- How to setup SLI on two GTX 560Ti's
- CUDA is compatible with gtx 1660ti laptop GPU?
- Use Nvidia as DMA devices is possible?
- I have a reboot error for installing nvidia-driver
- Using CUDA with an intel gpu
- GPU is not detected in Tensorflow
- Resolving "no kernel image is available for execution on the device" CUDA Error
- Why compile to cubin and not just to PTX?
- [ LINUX ]Tensorflow-GPU not working - TF-TRT Warning: Could not find TensorRT
- Unable to capture iterations on dlprof
- How do I restore the GPU after docker?
- Video isn't recognized as HDR in YouTube upload
- cuGraph graph_view_t constructor error: "offsets.size() returns an invalid value"
Related Questions in GPU-SHARED-MEMORY
- Bank Conflict Issue in CUDA Shared Memory Access
- cudaFuncSetSharedMemConfig is deprecated in 12.4 - why?
- perform convolution operation in cuda
- in cuda kernel , the shared memory matrix As is transposed, resulting in an error
- Confusion about CUDA shared memory
- Correct way of using cuda __shared__ memory for image filtering
- Reinterpret cast on *shared memory*
- What is the difference of dynamic shared memory as kernel attribute and kernel argument in CUDA
- Can memory read and write operations overlap in CUDA programming?
- Why is there no Shared Memory Bank conflict when loading consecutive half floats or vectorized int4?
- Use of Mixture of Static and Dynamic Shared Memory in Nested Arrays for Cuda Kernels
- Why this code that uses dynamically allocated shared memory in CUDA does not work?
- In V100 GPU or A100 GPU, CUDA COREs- data movement path - where do they look first for data in Shared Memory or L1 cache
- Understanding the Reduction in Bank Conflicts in CUDA Kernels
- Still bank conflict after shared memory padding
Related Questions in BANK-CONFLICT
- Bank Conflict Issue in CUDA Shared Memory Access
- Understanding the Reduction in Bank Conflicts in CUDA Kernels
- Still bank conflict after shared memory padding
- CUDA shared memory bank conflict unexpected timing
- Is there still shared mem bank conflict in nvidia cuda compute capability 7.0 and above?
- Memory padding vs coalesced access
- CUDA memory bank conflict
- Reading Shared/Local Memory Store/Load bank conflicts hardware counters for OpenCL executable under Nvidia
- Bank Conflicts From Non-Sequential Access in Shared Memory on CUDA
- CUDA shared memory efficiency at 50%?
- Strategy for minimizing bank conflicts for 64-bit thread-separate shared memory
- CUDA: overloading of shared memory to implement reduction approach with multiple arrays
- GPU shared memory practical example
- Will the same thread accessing the same memory bank twice cause conflicts?
- How to measure bank conflicts per warp using NVIDIA Visual Profiler?
Trending Questions
- UIImageView Frame Doesn't Reflect Constraints
- Is it possible to use adb commands to click on a view by finding its ID?
- How to create a new web character symbol recognizable by html/javascript?
- Why isn't my CSS3 animation smooth in Google Chrome (but very smooth on other browsers)?
- Heap Gives Page Fault
- Connect ffmpeg to Visual Studio 2008
- Both Object- and ValueAnimator jumps when Duration is set above API LvL 24
- How to avoid default initialization of objects in std::vector?
- second argument of the command line arguments in a format other than char** argv or char* argv[]
- How to improve efficiency of algorithm which generates next lexicographic permutation?
- Navigating to the another actvity app getting crash in android
- How to read the particular message format in android and store in sqlite database?
- Resetting inventory status after order is cancelled
- Efficiently compute powers of X in SSE/AVX
- Insert into an external database using ajax and php : POST 500 (Internal Server Error)
Popular Questions
- How do I undo the most recent local commits in Git?
- How can I remove a specific item from an array in JavaScript?
- How do I delete a Git branch locally and remotely?
- Find all files containing a specific text (string) on Linux?
- How do I revert a Git repository to a previous commit?
- How do I create an HTML button that acts like a link?
- How do I check out a remote Git branch?
- How do I force "git pull" to overwrite local files?
- How do I list all files of a directory?
- How to check whether a string contains a substring in JavaScript?
- How do I redirect to another webpage?
- How can I iterate over rows in a Pandas DataFrame?
- How do I convert a String to an int in Java?
- Does Python have a string 'contains' substring method?
- How do I check if a string contains a specific word?
In this Nvidia blog compute capability 2.0 is said to have a multicast (and broadcast) feature which converts address collisions into single memory requests. Not all bank conflicts are caused by accesses to the same address but are caused by different addresses having the same result from the modulo calculation with the number of banks.
In your example, all threads accessing same address will do a broadcast operation. To generate a true bank conflict, you need to access multiple addresses like 0, stride, stride x2, stride x3, etc. such that there is no multicast but serialization on the same (shared) memory bank.
Volta architecture still has shared bank conflicts.
If shared memory has 32 banks, then it will have bank conflicts for 32 bit aligned nth, n+32nd, n+64th, ... addresses accessed at the same time. Unless they invent a dual-pipelined shared memory bank.