lorenfb
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Re: Tesla's autopilot, on the road

Sun Feb 25, 2018 10:40 pm

RegGuheert wrote:[One question: Since the Tegra (X1?) processor doesn't not have a "deep-learning accelerator" like is found on the upcoming Xavier processor, are the neural networks in the Tesla Autopilot all implemented in the GPU?


The answer is yes given the extensive processor demands, i.e. the enormity of data, of the neural network system being implemented
by Tesla for AP without using LIDAR. Tesla most likely will switch to the later Nvidia processor when available as system demands approach
AP 5. The Nvidia stock was a great buy at about $80 -$90 (now $245) when Tesla switched from Mobileye.
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DanCar
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Re: Tesla's autopilot, on the road

Mon Feb 26, 2018 3:45 am

lorenfb wrote:
RegGuheert wrote:[One question: Since the Tegra (X1?) processor doesn't not have a "deep-learning accelerator" like is found on the upcoming Xavier processor, are the neural networks in the Tesla Autopilot all implemented in the GPU?
The answer is yes given the extensive processor demands, i.e. the enormity of data, of the neural network system being implemented by Tesla for AP without using LIDAR. Tesla most likely will switch to the later Nvidia processor when available as system demands approach AP 5. The Nvidia stock was a great buy at about $80 -$90 (now $245) when Tesla switched from Mobileye.
Tesla will also likely switch to an neural processing unit (NPU) at some point. Tesla is developing their own and there are existing systems out there like tensor processing unit (TPU). These are said to be on the order of 10X better than GPUs for neural processing.

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RegGuheert
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Re: Tesla's autopilot, on the road

Mon Feb 26, 2018 4:14 am

DanCar wrote:
lorenfb wrote:
RegGuheert wrote:[One question: Since the Tegra (X1?) processor doesn't not have a "deep-learning accelerator" like is found on the upcoming Xavier processor, are the neural networks in the Tesla Autopilot all implemented in the GPU?
The answer is yes given the extensive processor demands, i.e. the enormity of data, of the neural network system being implemented by Tesla for AP without using LIDAR. Tesla most likely will switch to the later Nvidia processor when available as system demands approach AP 5. The Nvidia stock was a great buy at about $80 -$90 (now $245) when Tesla switched from Mobileye.
Tesla will also likely switch to an neural processing unit (NPU) at some point. Tesla is developing their own and there are existing systems out there like tensor processing unit (TPU). These are said to be on the order of 10X better than GPUs for neural processing.
I'm pretty sure an NPU is the same thing as the "deep-learning accelerator" that is included on the Xavier processor I mentioned above.

For reference, here is a post where I discussed the features of the new Xavier processor. In the link provided there the following claim is made:
GreenCarCongress wrote:Pegasus is built on two Xavier SoCs and two next-generation NVIDIA GPUs. Customers will get the first samples of Pegasus with its 320 trillion operations per second of processing performance in mid-2018.
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DanCar
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Re: Tesla's autopilot, on the road

Mon Feb 26, 2018 4:26 am

Might find this article benchmarking cloud TPUs and GPUs interesting: https://blog.riseml.com/benchmarking-go ... 1c03b71384

The cloud nVidia V100 GPUs cost $8K each and a server with eight of them costs $150k and the TPUs are significantly faster. https://arstechnica.com/gadgets/2017/05 ... u-details/

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RegGuheert
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Re: Tesla's autopilot, on the road

Mon Feb 26, 2018 7:32 am

DanCar wrote:Might find this article benchmarking cloud TPUs and GPUs interesting: https://blog.riseml.com/benchmarking-go ... 1c03b71384

The cloud nVidia V100 GPUs cost $8K each and a server with eight of them costs $150k and the TPUs are significantly faster. https://arstechnica.com/gadgets/2017/05 ... u-details/
Interesting. According to the article, four of Google's TPUv2 chips only provide 56% of the performance of the NVidia solution I mentioned immediately above your post:
RiseML wrote:Jeff Dean’s slides, each Cloud TPU device consists of four “TPUv2 Chips”. Each chip has 16GB of memory with two cores, each with two matrix multiplication units. Together, the two cores provide 45 TFLOPs, totalling 180 TFLOPs and 64GB of memory for the whole TPU device.
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RegGuheert
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Re: Tesla's autopilot, on the road

Mon Feb 26, 2018 8:35 am

Interestingly, it appears that Tesla has signed with AMD to develop an AI chip:
CNBC wrote:Tesla is working with AMD to refine its new chip, which will likely reduce its reliance on Nvidia.
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lorenfb
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Re: Tesla's autopilot, on the road

Mon Feb 26, 2018 10:24 am

RegGuheert wrote:Interestingly, it appears that Tesla has signed with AMD to develop an AI chip:
CNBC wrote:Tesla is working with AMD to refine its new chip, which will likely reduce its reliance on Nvidia.


Hopefully, that will improve AMD's long term market position, but as yet their stock price ($12 - $14) has been lackluster compared to Intel's.
Have to remember when AMD was sued by Intel in 1990 over copyrights for using the 80C287's (math coprocessor) actual instruction code.
The only potentially significant processor ever developed by AMD was the 29000 bipolar processor chip set, and it died as new
design-ins went to Intel with the i960 processor.
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Re: Tesla's autopilot, on the road

Sat Mar 10, 2018 1:13 am

Tesla Driver Who Travelled With His Feet Out of the Window While on Autopilot Avoids Ticket
https://www.yahoo.com/news/tesla-driver ... 01566.html
Speaking to Jalopnik, a Los Angeles County spokesperson confirmed on Thursday that the ticket was scrapped by the court, but also said the decision had nothing to do with Mourad’s evidence surrounding the autopilot feature. “The reason the ticket was dismissed was because the officer didn’t show up.”

https://theblast.com/tesla-driver-auto- ... dismissed/ has a brief video clip.

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Re: Tesla's autopilot, on the road

Mon Mar 12, 2018 7:24 am

He absolutely deserved that ticket. The car is not safe when driven like that.
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Re: Tesla's autopilot, on the road

Sat Mar 31, 2018 12:40 pm

Now that Tesla has confirmed that last week's fatal model X crash was due to autopilot error, this is probably the best thread to discuss the incident.

IMO, the biggest news is that Tesla has acknowledged that the Tesla left its lane, and proceeded toward the fatal encounter with the concrete lane divider, while under control of the AP.

AFAIK, as reported by TSLA, all previous autopilot crashes (at least all those with fatalities) occurred with undetected vehicles or objects in the vehicle's intended lane of travel.

Tesla says crashed vehicle had been on autopilot prior to accident

LOS GATOS, California (Reuters) - Tesla Inc (TSLA.O) said on Friday that a Tesla Model X involved a fatal crash in California last week had activated its Autopilot system, raising new questions about the semi-autonomous system that handles some driving tasks.

Tesla also said vehicle logs from the accident showed no action had been taken by the driver soon before the crash and that he had received earlier warnings to put his hands on the wheel.

“The driver had about five seconds and 150 meters of unobstructed view of the concrete divider with the crushed crash attenuator, but the vehicle logs show that no action was taken,” Tesla said.

The statement did not say why the Autopilot system apparently did not detect the concrete divider.

The fatal crash and vehicle fire of the Tesla near Mountain View, California, involved two other cars and delayed traffic for hours. The 38-year-old Tesla driver died at a nearby hospital shortly after the crash.

The National Highway Traffic Safety Administration, which launched an investigation into the crash earlier this week, did not immediately comment late Friday. The National Transportation Safety Board is also investigating the fatal crash.

Autopilot allows drivers to take their hands off the wheel for extended periods under certain conditions. Tesla requires users to agree to keep their hands on the wheel “at all times” before they can use autopilot, but users routinely tout the fact they can use the system to drive hands-free...

https://www.reuters.com/article/us-tesl ... SKBN1H7023

TSLA's most recent account:

https://www.tesla.com/blog/update-last- ... s-accident
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