RoderickBeck

5 ms·

1.
by RoderickBeck 2y ago
Machine learning is by definition a black box. Nonlinear statistical models with huge numbers of parameters to be estimated.
2.
by RoderickBeck 2y ago
Facebook is building a 480 Tbps subsea cable connecting Spain to South Caroline. Some of the capacity in the form of fibre pairs and spectrum will be sold to carriers in the wholesale market. It is a 24 pair system using the latest and grea
3.
Meta's Half Petabit New Atlantic Subsea Cable(subseacables.blogspot.com)
2 points by RoderickBeck 2y ago|1 comments
4.
by RoderickBeck 2y ago
No, Facebook is building a cable from the East Coast to South Africa and then from South Africa to India and forward to Australia. The final leg is to the US. What Tagare did is take the W shaped network and add branching units. Those branc
5.
by RoderickBeck 2y ago
Actually the RTD ranges from 58.9 ms to close 80 milliseconds depending on the cable. That is assuming the end points are Secaucus NY4 and Slough LD4. Those re data centers.
6.
by RoderickBeck 2y ago
AI data centers are not latency sensitive because their purpose is model estimation, not service delivery. But they still need fibre optic connnections to move immense amounts of data.
7.
by RoderickBeck 2y ago
They are private assets. And really it is impossible to protect them. How do you protect 1.5 million kilometers of spaghetti?
8.
by RoderickBeck 2y ago
And far less bandwidth. Microwave is used for ultr-low latency trading. But most financials ride subsea cables like everyone else.
9.
by RoderickBeck 2y ago
Maintenance and repair is third party. Subcom, Alcatel, etc.
10.
by RoderickBeck 2y ago
It is about expense. It is cheaper to own than to rent if your traffic is great enough. And ownership provides control and better management.
11.
by RoderickBeck 2y ago
I think that cable was SWM5. It ended up 15 kilometers from the original burial trench. This is why deep burial is recommended, but adds expense.
12.
by RoderickBeck 2y ago
Correct. Modulation is encoding the bits in different aspects of the light wave. The better the modulation scheme, the more expensive is the division multiplexing equipment.
13.
by RoderickBeck 2y ago
Not really. I know of no cases where optical amplifiers posed a barrier to upgrading. Ciena and Infinera have been able to upgrade cable capacity by several X. Optical amplifiers simply boost the signal. A photo is absorbed and then re-emit
14.
by RoderickBeck 2y ago
It is called a spectrum sale. Quite common today where Google, Facebook, Microsoft, and Amazon are the banks behind most new high capacity systems.
15.
by RoderickBeck 2y ago
The throughput can be dramatically increased by upgrading the DWDM kit. The optical amplifiers in the water are technologically agnostic. The fibre can be a gating factor. For a while fibre with chromatic dispersion compensation was used an
16.
by RoderickBeck 2y ago
In international waters you do not permits. Only for landing the cable and in the territorial waters. - The Author.
17.
by RoderickBeck 2y ago
Not speculation in terms of the general path of the cable. What is speculation is the number of branching units.
18.
by RoderickBeck 2y ago
The article is accurate. I am the author. My sources are/were involved in designing the cable. As noted the cable connects the US East Coast to South Africa and then heads to India and continues on to Australia before the home stretch
19.
by RoderickBeck 2y ago
Hi, I am the author. The article is not speculation. I know from sources inside Facebook that the cable will head Southeast from the US East Coast directly to South Africa. From there it heads directly to India. From India to Australia. Fro