Tenstorrent Inc.

Tenstorrent Ai Ulc

Ivan Matosevic

Ljubisa Bajic

Davor Capalija

Jasmina Vasiljevic

Alex Cejkov

Utku Aydonat

S Alexander Chin

Djordje Maksimovic

Andrew Lewycky

Milos Trajkovic

Methods and systems for the accelerated execution of a directed graph are disclosed. The execution can involve the generation of an inference from a set of inputs provided to an artificial neural network. In a specific example, a method for executing a directed graph includes receiving at least two batches of indices. The batches of indices, when used to access a set of embeddings, provide at least two batches of embedding outputs and execute a layer of the directed graph. The method further includes accessing the set of embeddings using the at least two batches of indices. The method further includes rearranging, based on a set of latencies for the accessing step, the at least two batches of embedding outputs into at least two batches of rearranged embeddings. The method further includes providing the at least two batches of rearranged embeddings to a subsequent layer of the directed graph.

Graph execution using access request response dynamic batch assembly

Methods and systems related to the efficient execution of complex computations by a multicore processor and the movement of data among the various processing cores in the multicore processor are disclosed. A multicore processor includes a set of processing cores and associated sets of processing pipelines, core controllers, routers, and network interface units. The multicore processor also includes a computation layer, for conducting computations using the set of processing cores, with executable instructions for the set of processing pipelines which are executed by the set of core controllers. The multicore processor also includes a network-on-chip layer, for connecting the set of processing cores in the multicore processor, with executable instructions for the set of routers and the set of network interface units. The multicore processor also includes a set of programmable controllers, with executable instructions for reformatting computational data from the computation layer for transmission through the network-on-chip layer.

Overlay layer for network of processor cores

Methods and systems for executing an application data flow graph on a set of computational nodes are disclosed. The computational nodes can each include a programmable controller from a set of programmable controllers, a memory from a set of memories, a network interface unit from a set of network interface units, and an endpoint from a set of endpoints. A disclosed method comprises configuring the programmable controllers with instructions. The method also comprises independently and asynchronously executing the instructions using the set of programmable controllers in response to a set of events exchanged between the programmable controllers themselves, between the programmable controllers and the network interface units, and between the programmable controllers and the set of endpoints. The method also comprises transitioning data in the set of memories on the computational nodes in accordance with the application data flow graph and in response to the execution of the instructions.

Overlay layer hardware unit for network of processor cores

Methods and systems associated with caches are disclosed. One disclosed system includes at least one memory storing at least two data structures. The at least two data structures include a first data structure and a second data structure. The system also includes at least two caches with a first cache which caches the first data structure and a second cache which caches the second data structure. The system also includes a controller communicatively coupled to the at least two caches. The controller separately configures the first cache based on the first data structure and the second cache based on the second data structure. The system also comprises at least one processor communicatively coupled to the at least two caches. The processor accesses each of the at least two data structures using the at least two caches and during the execution of a complex computation.

Data structure optimized dedicated memory caches

Methods and systems related to the efficient execution of complex computations by a multicore processor and the movement of data among the various processing cores in the multicore processor are disclosed. A multicore processor stack for the multicore processor can include a computation layer, for conducting computations using the processing cores in the multicore processor, with executable instructions for processing pipelines in the processing cores. The multicore processor stack can also include a network-on-chip layer, for connecting the processing cores in the multicore processor, with executable instructions for routers and network interface units in the multicore processor. The computation layer and the network-on-chip layer can be logically isolated by a network-on-chip overlay layer.

Methods and systems related to speculative resource allocation for routing on an interconnect fabric are disclosed herein. One disclosed method includes speculatively allocating a collection of resources to support a set of paths through an interconnect fabric. The method also includes aggregating a set of responses from the set of paths at a branch node on the set of paths. If a resource contention is detected, the set of responses will include an indicator of a resource contention. The method will then further include transmitting, from the branch node and in response to the indicator of the resource contention, a deallocate message downstream and the indicator of the resource contention upstream, and reallocating resources for the multicast after a hold period.

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Toronto, Canada

Ivan Matosevic