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Initial changes for Recurrent state rollback for nemotron for cuda - #26623
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ggerganov merged 17 commits intoAug 14, 2026
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…kend-ops for cpu and cuda
Co-authored-by: Georgi Gerganov <ggerganov@gmail.com>
…ed or not and also handled memory->n_rs_seq >1 case incase of op is not supported
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* Initial changes for Recurrent state rollback for nemotron for cpu and cuda * Removing CPU RS rollback. Will enable it in subsequent PRs * addition of test case * Removing assert and calling runtime API to check if op is supported * removing extra API and updating the call sites for K * replace static cuda detection to runtime fused_op api * address review comments and fallback when SSM rollback not supprted * Adding changes for supporting RS-rollback in CPU. Also added test-backend-ops for cpu and cuda * removing memory manipulation as rs rollback is now supported in CPU * removing the static probe which is not needed now * correcting the format * address review comments * enabling test for all the backends, unsupported backends will fallback to CPU * Apply suggestions from code review Co-authored-by: Georgi Gerganov <ggerganov@gmail.com> * choose different graph based on the result of fused_ssm_op is supported or not and also handled memory->n_rs_seq >1 case incase of op is not supported * Support K > 1 in ssm_scan for all backends * Fix CI Issues --------- Co-authored-by: Georgi Gerganov <ggerganov@gmail.com> Co-authored-by: Gaurav Garg <gaugarg@nvidia.com> (cherry picked from commit 1692f9e)
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* Initial changes for Recurrent state rollback for nemotron for cpu and cuda * Removing CPU RS rollback. Will enable it in subsequent PRs * addition of test case * Removing assert and calling runtime API to check if op is supported * removing extra API and updating the call sites for K * replace static cuda detection to runtime fused_op api * address review comments and fallback when SSM rollback not supprted * Adding changes for supporting RS-rollback in CPU. Also added test-backend-ops for cpu and cuda * removing memory manipulation as rs rollback is now supported in CPU * removing the static probe which is not needed now * correcting the format * address review comments * enabling test for all the backends, unsupported backends will fallback to CPU * Apply suggestions from code review Co-authored-by: Georgi Gerganov <ggerganov@gmail.com> * choose different graph based on the result of fused_ssm_op is supported or not and also handled memory->n_rs_seq >1 case incase of op is not supported * Support K > 1 in ssm_scan for all backends * Fix CI Issues --------- Co-authored-by: Georgi Gerganov <ggerganov@gmail.com> Co-authored-by: Gaurav Garg <gaugarg@nvidia.com>
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* Initial changes for Recurrent state rollback for nemotron for cpu and cuda * Removing CPU RS rollback. Will enable it in subsequent PRs * addition of test case * Removing assert and calling runtime API to check if op is supported * removing extra API and updating the call sites for K * replace static cuda detection to runtime fused_op api * address review comments and fallback when SSM rollback not supprted * Adding changes for supporting RS-rollback in CPU. Also added test-backend-ops for cpu and cuda * removing memory manipulation as rs rollback is now supported in CPU * removing the static probe which is not needed now * correcting the format * address review comments * enabling test for all the backends, unsupported backends will fallback to CPU * Apply suggestions from code review Co-authored-by: Georgi Gerganov <ggerganov@gmail.com> * choose different graph based on the result of fused_ssm_op is supported or not and also handled memory->n_rs_seq >1 case incase of op is not supported * Support K > 1 in ssm_scan for all backends * Fix CI Issues --------- Co-authored-by: Georgi Gerganov <ggerganov@gmail.com> Co-authored-by: Gaurav Garg <gaugarg@nvidia.com>
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* Initial changes for Recurrent state rollback for nemotron for cpu and cuda * Removing CPU RS rollback. Will enable it in subsequent PRs * addition of test case * Removing assert and calling runtime API to check if op is supported * removing extra API and updating the call sites for K * replace static cuda detection to runtime fused_op api * address review comments and fallback when SSM rollback not supprted * Adding changes for supporting RS-rollback in CPU. Also added test-backend-ops for cpu and cuda * removing memory manipulation as rs rollback is now supported in CPU * removing the static probe which is not needed now * correcting the format * address review comments * enabling test for all the backends, unsupported backends will fallback to CPU * Apply suggestions from code review Co-authored-by: Georgi Gerganov <ggerganov@gmail.com> * choose different graph based on the result of fused_ssm_op is supported or not and also handled memory->n_rs_seq >1 case incase of op is not supported * Support K > 1 in ssm_scan for all backends * Fix CI Issues --------- Co-authored-by: Georgi Gerganov <ggerganov@gmail.com> Co-authored-by: Gaurav Garg <gaugarg@nvidia.com>
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* Initial changes for Recurrent state rollback for nemotron for cpu and cuda * Removing CPU RS rollback. Will enable it in subsequent PRs * addition of test case * Removing assert and calling runtime API to check if op is supported * removing extra API and updating the call sites for K * replace static cuda detection to runtime fused_op api * address review comments and fallback when SSM rollback not supprted * Adding changes for supporting RS-rollback in CPU. Also added test-backend-ops for cpu and cuda * removing memory manipulation as rs rollback is now supported in CPU * removing the static probe which is not needed now * correcting the format * address review comments * enabling test for all the backends, unsupported backends will fallback to CPU * Apply suggestions from code review Co-authored-by: Georgi Gerganov <ggerganov@gmail.com> * choose different graph based on the result of fused_ssm_op is supported or not and also handled memory->n_rs_seq >1 case incase of op is not supported * Support K > 1 in ssm_scan for all backends * Fix CI Issues --------- Co-authored-by: Georgi Gerganov <ggerganov@gmail.com> Co-authored-by: Gaurav Garg <gaugarg@nvidia.com>
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* Initial changes for Recurrent state rollback for nemotron for cpu and cuda * Removing CPU RS rollback. Will enable it in subsequent PRs * addition of test case * Removing assert and calling runtime API to check if op is supported * removing extra API and updating the call sites for K * replace static cuda detection to runtime fused_op api * address review comments and fallback when SSM rollback not supprted * Adding changes for supporting RS-rollback in CPU. Also added test-backend-ops for cpu and cuda * removing memory manipulation as rs rollback is now supported in CPU * removing the static probe which is not needed now * correcting the format * address review comments * enabling test for all the backends, unsupported backends will fallback to CPU * Apply suggestions from code review Co-authored-by: Georgi Gerganov <ggerganov@gmail.com> * choose different graph based on the result of fused_ssm_op is supported or not and also handled memory->n_rs_seq >1 case incase of op is not supported * Support K > 1 in ssm_scan for all backends * Fix CI Issues --------- Co-authored-by: Georgi Gerganov <ggerganov@gmail.com> Co-authored-by: Gaurav Garg <gaugarg@nvidia.com>
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Initial changes for Recurrent state rollback for nemotron for cpu and cuda
Overview
This PR adds support for Recurrent state rollback for nemotron model. It creates separate copies of states for every draft token and then rollback to the last accepted token's state. Also added test case to verify the ssm support
Additional information
Requirements