Journals

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Dec 1, 2022

Supply chain resilience requires bandwidth

The last couple of years haven’t been kind to supply chains. In fact, the only thing that hasn’t been in short supply appears to be forces of disruption':' lockdowns, wars, inflation, etc. As a result, a newfound interest in ‘resilient’ supply chains has emerged.

Sep 27, 2022

Pitfalls of supply chain for aeronautics

Aeronautics companies are fundamentally risk adverse – for very good reasons – and this reflects in the management of the companies’ activity in every area. However, this mentality can be a hindrance when it comes to supply chain, as avoiding risk and not integrating the very concept of risk at the heart of the supply chain means losing sight of what you are optimizing.

Sep 21, 2022

Differentiating Relational Queries

Supply chain data present themselves almost exclusively as relational data such as orders, clients, suppliers, products, etc. Those data are collected through the business systems - the ERP, the CRM, the WMS - that are used to operate the company.

Sep 6, 2022

Reproducible Parallel Stochastic Gradient Descent

The stochastic gradient descent (SGD) is one of the most successful techniques ever devised for both machine learning and mathematical optimization. Lokad has been extensively exploiting the SGD for years for supply chain purposes, mostly through differentiable programming. Most of our clients have a least one SGD somewhere in their data pipeline.

Aug 24, 2022

Launching Supply Chain News

The ambition of news.lokad.com is to create a vibrant online community. No terms to accept, no forced login, no ads, no monetization plan, just a plain discussion text-based board, with a voting system to let the most interesting contributions surface.

Feb 21, 2022

Grand experiment on the TCO of a supply chain software

The price tag of a piece of software ranges from nothing, as it happens with open source, to quite a lot - enterprise software leaning heavily towards the latter. However, operating a piece of software always involves some degree of overhead. The notion of TCO (Total Cost of Ownership) precisely tries to capture the cost in full, taking into account both direct and indirect costs.

Feb 14, 2022

Control and bureaucracies in Supply Chains

Over the years, it has become increasingly frustrating to witness that most companies seeking to improve their supply chain performance are setting themselves up for failure through their own RFP (request for proposals) and RFQ (request for quotes) processes.

Nov 29, 2021

Envision VM (part 3), Atoms and Data Storage

During execution, thunks read input data and write output data, often in large quantities. How to preserve this data from the moment it is created and until it is used (part of the answer is on NVMe drives spread over several machines), and how to minimize the amount of data that goes through channels slower than RAM (network and persistent storage).

Nov 22, 2021

Envision VM (part 2), Thunks and the Execution Model

Like most other parallel execution systems, Envision produces a directed acyclic graph (DAG) where each node represents an operation that needs to be performed, and each edge represents a data dependency where the downstream node needs the output of the upstream node in order to run.