Deterministic Consistency: A Programming Model for Shared Memory Parallelism

The difficulty of developing reliable parallel software is generating interest in deterministic environments, where a given program and input can yield only one possible result. Languages or type systems can enforce determinism in new code, and runtime systems can impose synthetic schedules on legacy parallel code. To parallelize existing serial code, however, we would like a programming model that is naturally deterministic without language restrictions or artificial scheduling. We propose "deterministic consistency", a parallel programming model as easy to understand as the "parallel assignment" construct in sequential languages such as Perl and JavaScript, where concurrent threads always read their inputs before writing shared outputs. DC supports common data- and task-parallel synchronization abstractions such as fork/join and barriers, as well as non-hierarchical structures such as producer/consumer pipelines and futures. A preliminary prototype suggests that software-only implementations of DC can run applications written for popular parallel environments such as OpenMP with low (<10%) overhead for some applications.Comment: 7 pages, 3 figure

Financial structure and the transmission of monetary shocks: preliminary evidence for the Czech Republic, Hungary and Poland

The paper analyses the financial structure of the private sector in the Czech Republic, Hungary and Poland and assesses its implications for the monetary transmission mechanism. The financial accounts of these countries provide a picture of a private sector which is predictably financially less mature than the EU average: the corporate sector relies significantly on non-market financial liabilities (such as trade credits and non-traded shares) and bears a substantial exchange rate risk; the household sector is less sophisticated both in terms of financial assets, whose composition is tilted towards bank deposits, and liabilities, the volume of which is still negligible. VAR system estimates conducted separately on each acceding country suggest that, despite the inferior financial development of these countries, the co-movement of macroeconomic variables conditional on a monetary policy shock is similar across countries and not dissimilar to what is found in the more advanced economies.Financial structure, identified VAR, monetary policy shock, price puzzle.

The Master\u27s Tools Will Never Dismantle The Master\u27s House: Kavanaugh\u27s Confirmation Hearing and The Perils of Progressive Punitivism

(Excerpt) This essay proceeds in four parts. In Part I, I problematize the idea of the accused’s demeanor as evidence of guilt, remorse, or entitlement, arguing that we tend to overestimate our ability to deduce internal states of mind from people’s behavior and expressions. Part II assesses the potential (or lack thereof) of public performances of reckoning to produce a valuable expression of remorse, discussing the value of contingent apologies. Part III expands the framework to examine the way our politically fractured field responds to partisan efforts to excoriate culprits, arguing that “starting a national conversation” on the basis of excoriation and stigmatization is not a realistic expectation. In Part IV, I situate the Kavanaugh incident in the overall context of progressive punitivism, offering an initial and generative sketch of the ideology and its mixed effects. The conclusion offers a modest proposal for a better way to start a bipartisan conversation about gender-based inequities and iniquities, as well as a future agenda for research on progressive punitivism in its other manifestations